Update actions/cache action to v4

Author: renovate[bot]

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
         with:
           node-version: 16.20.2
       - name: Cache node modules
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
@@ -43,7 +43,7 @@ jobs:
         with:
           node-version: 16.20.2
       - name: Cache node modules
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
@@ -66,7 +66,7 @@ jobs:
         with:
           node-version: 16.20.2
       - name: Cache node modules
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
@@ -93,7 +93,7 @@ jobs:
         with:
           node-version: 16.20.2
       - name: Cache node modules
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}