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

Author: renovate[bot]

.github/workflows/ci-apps-docs.yml

@@ -53,7 +53,7 @@ jobs:
 
       # see https://github.com/vercel/next.js/pull/27362
       - name: ♻️ Restore "docs" app build from cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ${{ github.workspace }}/apps/docs/.next/cache

.github/workflows/ci-apps-web.yml

@@ -53,7 +53,7 @@ jobs:
 
       # see https://github.com/vercel/next.js/pull/27362
       - name: ♻️ Restore "web" app build from cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ${{ github.workspace }}/apps/web/.next/cache

.github/workflows/ci-packages.yml

@@ -55,7 +55,7 @@ jobs:
 
       # see https://github.com/vercel/next.js/pull/27362
       - name: ♻️ Restore packages cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ${{ github.workspace }}/.cache

.github/workflows/e2e-apps-web.yml

@@ -70,7 +70,7 @@ jobs:
 
       # see https://github.com/vercel/next.js/pull/27362
       - name: ♻️ Restore "web" app build from cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ${{ github.workspace }}/apps/web/.next/cache