Update actions/cache action

Author: renovate[bot]

.github/actions/restore-cache/action.yml

@@ -10,7 +10,7 @@ runs:
   steps:
     - name: Check dependency cache
       id: dep-cache
-      uses: actions/cache/restore@v4
+      uses: actions/cache/restore@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5
       with:
         path: ${{ env.CACHED_DEPENDENCY_PATHS }}
         key: ${{ env.DEPENDENCY_CACHE_KEY }}
@@ -26,7 +26,7 @@ runs:
     - name: Check dependency cache (retry)
       id: dep-cache-retry-attempt
       if: steps.dep-cache.outputs.cache-hit != 'true'
-      uses: actions/cache/restore@v4
+      uses: actions/cache/restore@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5
       with:
         path: ${{ env.CACHED_DEPENDENCY_PATHS }}
         key: ${{ env.DEPENDENCY_CACHE_KEY }}

.github/actions/setup-playwright/action.yml

@@ -15,7 +15,7 @@ runs:
       shell: bash
       run: echo "version=$(node -p "require('@playwright/test/package.json').version")" >> $GITHUB_OUTPUT
 
-    - uses: actions/cache@v4
+    - uses: actions/cache@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5
       name: Check if Playwright browser is cached
       id: playwright-cache
       with:

.github/workflows/ci.yml

@@ -165,7 +165,7 @@ jobs:
           echo "$EOF" >> "$GITHUB_ENV"
 
       - name: Nx cache
-        uses: actions/cache@v4
+        uses: actions/cache@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5
         id: cache_nx
         with:
           path: .nxcache
@@ -176,7 +176,7 @@ jobs:
             nx-Linux
 
       - name: Check dependency cache
-        uses: actions/cache@v4
+        uses: actions/cache@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5
         id: cache_dependencies
         with:
           path: ${{ env.CACHED_DEPENDENCY_PATHS }}
@@ -264,7 +264,7 @@ jobs:
         env:
           DEPENDENCY_CACHE_KEY: ${{ needs.job_setup.outputs.dependency_cache_key }}
 
-      - uses: actions/cache@v4
+      - uses: actions/cache@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5
         with:
           path: ghost/**/.eslintcache
           key: eslint-cache