Pin dependencies

Author: renovate[bot]

.github/workflows/c-cpp.yml

@@ -6,9 +6,9 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4 # v4
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
     - name: Cache assets
-      uses: actions/cache@v4 # v4
+      uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4
       with:
         # npm cache files are stored in `~/.npm` on Linux/macOS
         path: tmp