Use maintained workflow toolchain action

.github/workflows/ci.yml

@@ -13,10 +13,8 @@ jobs:
       - name: Checkout sources
         uses: actions/checkout@v3
       - name: Install Rust
-        uses: actions-rs/toolchain@v1
+        uses: dtolnay/rust-toolchain@v1
         with:
-          profile: minimal
           toolchain: stable
-          override: true
       - name: Run tests
         run: cargo test