chore(deps): pin actions/cache action to 3624ceb

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -235,7 +235,7 @@ jobs:
 
       # Use the lower-level cache actions for the success cache, so that we can store the cache even on failed builds
       - name: restore backstage-cli cache
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@3624ceb22c1c5a301c8db4169662070a689d9ea8 # v4
         with:
           path: .cache/backstage-cli
           key: ${{ runner.os }}-v${{ matrix.node-version }}-backstage-cli
@@ -254,7 +254,7 @@ jobs:
 
       # Always save success cache even if there were failures, that way it can be used in re-triggered builds
       - name: save backstage-cli cache
-        uses: actions/cache/save@v4
+        uses: actions/cache/save@3624ceb22c1c5a301c8db4169662070a689d9ea8 # v4
         if: always()
         with:
           path: .cache/backstage-cli

.github/workflows/deploy_packages.yml

@@ -94,7 +94,7 @@ jobs:
         run: yarn backstage-cli config:check --lax
 
       - name: backstage-cli cache
-        uses: actions/cache@v4
+        uses: actions/cache@3624ceb22c1c5a301c8db4169662070a689d9ea8 # v4
         with:
           path: .cache/backstage-cli
           key: ${{ runner.os }}-v${{ matrix.node-version }}-backstage-cli