update MSRV 1.64 -> 1.71

This matches upstream rustls.

Author: cpu

.github/workflows/test.yaml

@@ -25,7 +25,7 @@ jobs:
           - nightly
           # MSRV - keep in sync with what rustls and rustls-platform-verifier
           # consider MSRV
-          - 1.64.0
+          - 1.71.0
         os: [ ubuntu-latest ]
         # but only stable, clang, and aws-lc-rs on macos (slower platform)
         include:

Cargo.toml

@@ -9,7 +9,7 @@ repository = "https://github.com/rustls/rustls-ffi"
 categories = ["network-programming", "cryptography"]
 edition = "2021"
 links = "rustls_ffi"
-rust-version = "1.64"
+rust-version = "1.71"
 
 [features]
 default = ["aws-lc-rs"]

README.md

@@ -21,7 +21,7 @@ to provide the cryptographic primitives.
 
 # Build
 
-You'll need to [install the Rust toolchain](https://rustup.rs/) (version 1.64
+You'll need to [install the Rust toolchain](https://rustup.rs/) (version 1.71
 or above) and a C compiler (`gcc` and `clang` should both work).
 
 ## Cryptography provider