Update actions/cache action to v4

Author: renovate[bot]

.github/workflows/dependency-check.yml

@@ -20,7 +20,7 @@ jobs:
           token: ${{ steps.generate-token.outputs.token }}
           ref: master
       - name: Set up Cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.gradle/caches
           key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}

.github/workflows/swagger.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Set up Cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.gradle/caches
           key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}