Try to workaround gha issue with the caching action

Author: bjorn3

.github/workflows/rustc.yml

@@ -20,7 +20,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: build/cg_clif
-        key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}
+        key: ${{ runner.os }}-rustc-test-cargo-build-target-${{ hashFiles('rust-toolchain', 'Cargo.lock') }}
 
     - name: Prepare dependencies
       run: ./y.sh prepare
@@ -43,7 +43,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: build/cg_clif
-        key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}
+        key: ${{ runner.os }}-rustc-test-cargo-build-target-${{ hashFiles('rust-toolchain', 'Cargo.lock') }}
 
     - name: Install ripgrep
       run: |