CI: switch to dtolnay/rust-toolchain

Author: cyqsimon

.github/workflows/ci.yaml

@@ -21,11 +21,9 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Install Rust
-        uses: actions-rs/toolchain@v1
+        uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-          profile: minimal
-          override: true
           components: rustfmt, clippy
 
       - name: Check formatting