Update actions/cache action to v4

Author: renovate[bot]

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         with:
           path: '**/node_modules'
           key: ${{ runner.os }}-lint-modules-${{ hashFiles('**/yarn.lock') }}
@@ -34,7 +34,7 @@ jobs:
         run: git config --global core.autocrlf input
       - name: Check out repository
         uses: actions/checkout@v2
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         with:
           path: '**/node_modules'
           key: ${{ runner.os }}-test-modules-${{ hashFiles('**/yarn.lock') }}
@@ -72,7 +72,7 @@ jobs:
       - name: Check out repository
         uses: actions/checkout@v2
       - name: Load cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: '**/node_modules'
           key: ${{ runner.os }}-docker-modules-v1-${{ hashFiles('**/yarn.lock') }}