Link with system-provided openssl instead of bundling rustls.

--- a/vendor/rustic_core/crates/backend/Cargo.toml
+++ b/vendor/rustic_core/crates/backend/Cargo.toml
@@ -74,7 +74,7 @@ walkdir = "2.5.0"
 
 # rest backend
 backoff = { version = "0.4.0", optional = true }
-reqwest = { version = "0.12.8", default-features = false, features = ["json", "rustls-tls-native-roots", "stream", "blocking"], optional = true }
+reqwest = { version = "0.12.8", default-features = false, features = ["json", "native-tls", "stream", "blocking"], optional = true }
 
 # rclone backend
 rand = { version = "0.8.5", optional = true }
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,6 +17,10 @@ description = """
 rustic - fast, encrypted, deduplicated backups powered by Rust
 """
 
+[patch.crates-io]
+rustic_backend = { path = "vendor/rustic_core/crates/backend" }
+rustic_core = { path = "vendor/rustic_core/crates/core" }
+
 [features]
 default = ["tui", "webdav"]
 mimalloc = ["dep:mimalloc"]
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1567,6 +1567,21 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f81ec6369c545a7d40e4589b5597581fa1c441fe1cce96dd1de43159910a36a2"
 
+[[package]]
+name = "foreign-types"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
+dependencies = [
+ "foreign-types-shared",
+]
+
+[[package]]
+name = "foreign-types-shared"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
+
 [[package]]
 name = "form_urlencoded"
 version = "1.2.1"
@@ -2078,7 +2093,6 @@ dependencies = [
  "hyper 1.4.1",
  "hyper-util",
  "rustls 0.23.14",
- "rustls-native-certs",
  "rustls-pki-types",
  "tokio",
  "tokio-rustls",
@@ -2086,6 +2100,22 @@ dependencies = [
  "webpki-roots 0.26.6",
 ]
 
+[[package]]
+name = "hyper-tls"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70206fc6890eaca9fde8a0bf71caa2ddfc9fe045ac9e5c70df101a7dbde866e0"
+dependencies = [
+ "bytes",
+ "http-body-util",
+ "hyper 1.4.1",
+ "hyper-util",
+ "native-tls",
+ "tokio",
+ "tokio-native-tls",
+ "tower-service",
+]
+
 [[package]]
 name = "hyper-util"
 version = "0.1.9"
@@ -2600,6 +2630,23 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "native-tls"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8614eb2c83d59d1c8cc974dd3f920198647674a0a035e1af1fa58707e317466"
+dependencies = [
+ "libc",
+ "log",
+ "openssl",
+ "openssl-probe",
+ "openssl-sys",
+ "schannel",
+ "security-framework",
+ "security-framework-sys",
+ "tempfile",
+]
+
 [[package]]
 name = "nix"
 version = "0.29.0"
@@ -2901,12 +2948,50 @@ dependencies = [
  "vec-strings",
 ]
 
+[[package]]
+name = "openssl"
+version = "0.10.66"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9529f4786b70a3e8c61e11179af17ab6188ad8d0ded78c5529441ed39d4bd9c1"
+dependencies = [
+ "bitflags 2.6.0",
+ "cfg-if 1.0.0",
+ "foreign-types",
+ "libc",
+ "once_cell",
+ "openssl-macros",
+ "openssl-sys",
+]
+
+[[package]]
+name = "openssl-macros"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.79",
+]
+
 [[package]]
 name = "openssl-probe"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
 
+[[package]]
+name = "openssl-sys"
+version = "0.9.103"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f9e8deee91df40a943c71b917e5874b951d32a802526c85721ce3b776c929d6"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+ "vcpkg",
+]
+
 [[package]]
 name = "option-ext"
 version = "0.2.0"
@@ -3588,17 +3673,18 @@ dependencies = [
  "http-body-util",
  "hyper 1.4.1",
  "hyper-rustls",
+ "hyper-tls",
  "hyper-util",
  "ipnet",
  "js-sys",
  "log",
  "mime",
+ "native-tls",
  "once_cell",
  "percent-encoding",
  "pin-project-lite",
  "quinn",
  "rustls 0.23.14",
- "rustls-native-certs",
  "rustls-pemfile 2.2.0",
  "rustls-pki-types",
  "serde",
@@ -3606,6 +3692,7 @@ dependencies = [
  "serde_urlencoded",
  "sync_wrapper",
  "tokio",
+ "tokio-native-tls",
  "tokio-rustls",
  "tokio-util",
  "tower-service",
@@ -3830,8 +3917,6 @@ dependencies = [
 [[package]]
 name = "rustic_backend"
 version = "0.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7d5efc9f8d081134827cbe44b064eefad0864da4d33f37bd66147d80b57eb3e"
 dependencies = [
  "aho-corasick",
  "anyhow",
@@ -3864,8 +3949,6 @@ dependencies = [
 [[package]]
 name = "rustic_core"
 version = "0.5.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11529c7b9a74297cb6c36f89d3746eb6a1112b8d309d5b25b338a9fedef0ff02"
 dependencies = [
  "aes256ctr_poly1305aes",
  "anyhow",
@@ -3973,19 +4056,6 @@ dependencies = [
  "zeroize",
 ]
 
-[[package]]
-name = "rustls-native-certs"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcaf18a4f2be7326cd874a5fa579fae794320a0f388d365dca7e480e55f83f8a"
-dependencies = [
- "openssl-probe",
- "rustls-pemfile 2.2.0",
- "rustls-pki-types",
- "schannel",
- "security-framework",
-]
-
 [[package]]
 name = "rustls-pemfile"
 version = "1.0.4"
@@ -4783,6 +4853,16 @@ dependencies = [
  "syn 2.0.79",
 ]
 
+[[package]]
+name = "tokio-native-tls"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbae76ab933c85776efabc971569dd6119c580d8f5d448769dec1764bf796ef2"
+dependencies = [
+ "native-tls",
+ "tokio",
+]
+
 [[package]]
 name = "tokio-rustls"
 version = "0.26.0"
@@ -5126,6 +5206,12 @@ version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5a84c137d37ab0142f0f2ddfe332651fdbf252e7b7dbb4e67b6c1f1b2e925101"
 
+[[package]]
+name = "vcpkg"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
+
 [[package]]
 name = "vec-strings"
 version = "0.4.8"