Pin Rust in CI (#87)

Author: laurmaedje

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Get Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.85.0
 
       - name: Get Rust cache
         uses: Swatinem/rust-cache@v2
@@ -47,7 +47,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: dtolnay/[email protected]
+        with:
+          components: clippy, rustfmt
       - uses: Swatinem/rust-cache@v2
       - uses: taiki-e/install-action@cargo-hack
       - run: cargo clippy --all-targets