Bump CI rust version, test stable only

Author: grandizzy

.github/workflows/ci.yml

@@ -22,12 +22,8 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
-        rust: ["stable", "1.83"]
+        rust: ["stable"]
         flags: ["", "--all-features"]
-        exclude:
-          # Skip because some features have higher MSRV.
-          - rust: "1.83" # MSRV
-            flags: "--all-features"
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@master