Increase MSRV to 1.76

This is once again due to trybuild dependencies, which is lame,
but no-one complained the last time, so hopefully it continues to
be fine.

Author: csnover

.github/workflows/rust.yml

@@ -43,7 +43,7 @@ jobs:
           - name: stable
             components: clippy, rustfmt, llvm-tools-preview
           - name: nightly
-          - name: "1.70" # rust-version, msrv
+          - name: "1.76" # rust-version, msrv
     steps:
       - name: Check out code
         uses: actions/checkout@v4

Cargo.toml

@@ -12,7 +12,7 @@ license = "MIT OR Apache-2.0"
 publish = false # Use `release.sh`
 documentation = "https://docs.rs/modular-bitfield"
 repository = "https://github.com/modular-bitfield/modular-bitfield"
-rust-version = "1.70.0"
+rust-version = "1.76.0"
 version = "0.13.0-pre"
 
 [package]