Use actions/checkout@v4 instead of actions/checkout@v1

Author: Harrison Cole

.github/workflows/master.yml

@@ -13,7 +13,7 @@ jobs:
       MAVEN_CENTRAL_PGP_KEY: ${{ secrets.MAVEN_CENTRAL_PGP_KEY }}
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - uses: gradle/wrapper-validation-action@v1
       - name: Set up JDK 11
         uses: actions/setup-java@v1

.github/workflows/pull_request.yml

@@ -13,7 +13,7 @@ jobs:
   buildAndTest:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - uses: gradle/wrapper-validation-action@v1
       - name: Set up JDK 11
         uses: actions/setup-java@v1

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
       RELEASE_VERSION: ${{ github.event.inputs.version }}
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - uses: gradle/wrapper-validation-action@v1
       - name: Set up JDK 11
         uses: actions/setup-java@v1