Use v4 actions

Author: Rollczi

.github/workflows/gradle.yml

@@ -16,14 +16,14 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.7
+        uses: actions/checkout@v4
       - name: 'Set up JDK ${{ matrix.java }}'
-        uses: actions/setup-java@v4.3.0
+        uses: actions/setup-java@v4
         with:
           distribution: adopt
           java-version: '${{ matrix.java }}'
       - name: Cache Gradle
-        uses: actions/cache@v4.0.2
+        uses: actions/cache@v4
         with:
           path: ~/.gradle/caches
           key: >-