chore(deps): update actions/cache action to v4 (#426)

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

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
 
       # Use cache to share the output across different jobs
       # No need to cache node_modules because they are all bundled
-      - uses: actions/cache/save@v3
+      - uses: actions/cache/save@v4
         id: cache
         with:
           path: outfile.cjs
@@ -110,7 +110,7 @@ jobs:
         with:
           node-version: ${{ matrix.node-version }}
           cache: 'pnpm'
-      - uses: actions/cache/restore@v3
+      - uses: actions/cache/restore@v4
         id: cache-restore
         with:
           path: outfile.cjs
@@ -135,15 +135,15 @@ jobs:
       - if: ${{ contains(matrix.flag-for-e2e, '--cypress') }}
         name: Cache Cypress binaries
         id: cache-cypress
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           # TODO: avoid snowballing by adding version
           key: ${{ runner.os }}-cypress-bin
           path: ${{ env.CYPRESS_CACHE_FOLDER }}
 
       - if: ${{ contains(matrix.flag-for-e2e, '--playwright') }}
         name: Cache Playwright's binary
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           # Playwright removes unused browsers automatically
           # So does not need to add playwright version to key