Switch clippy to stable

Happy 1.62.0, everyone!

Author: fanninpm

.github/workflows/ci.yaml

@@ -230,7 +230,6 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
             profile: minimal
-            toolchain: beta
             components: rustfmt, clippy
             override: true
       - name: run rustfmt