chore(deps): update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
         java-version: [ 8, 8.0.192, 11, 11.0.3, 17, 17.0.0+35 ]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v2
         with:
           distribution: 'zulu'
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v2
         with:
           distribution: 'adopt'