Upgrade actions/setup-java to v5 and actions/checkout to v6

Author: vietj

.github/workflows/ci-4.x.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
       - name: Install JDK
         uses: joschi/setup-jdk@v2
         with:
@@ -37,7 +37,7 @@ jobs:
       VERTX_NEXUS_PASSWORD: ${{ secrets.VERTX_NEXUS_PASSWORD }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
       - name: Install JDK
         uses: joschi/setup-jdk@v2
         with: