update docs on current MSRV and note latest bump in changelog

Author: KodrAus

CHANGELOG.md

@@ -13,6 +13,9 @@
 
 **Full Changelog**: https://github.com/rust-lang/log/compare/0.4.29...0.4.30
 
+### Notable Changes
+* MSRV is bumped to 1.71.0 in https://github.com/rust-lang/log/pull/723
+
 ## [0.4.29] - 2025-12-02
 
 ### What's Changed

README.md

@@ -18,7 +18,7 @@ implementation that is most suitable for its use case.
 
 ## Minimum supported `rustc`
 
-`1.68.0+`
+See the `rust-version` field in `Cargo.toml` for the current minimum Rust toolchain version.
 
 This version is explicitly tested in CI and may be bumped in any release as needed. Maintaining compatibility with older compilers is a priority though, so the bar for bumping the minimum supported version is set very high. Any changes to the supported minimum version will be called out in the release notes.