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

Author: renovate[bot]

.github/workflows/deploy.yml

@@ -18,7 +18,7 @@ jobs:
       contents: write
       packages: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: "Set up JDK"
         uses: actions/setup-java@v4
         with:

.github/workflows/maven.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: "Set up JDK"
         uses: actions/setup-java@v4
         with: