Update actions/checkout action to v6.0.3 (#201)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/publish.yml

@@ -13,7 +13,7 @@ jobs:
       packages: write
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
       - uses: gradle/actions/wrapper-validation@v6
       - name: Set up JDK
         uses: actions/setup-java@v5

.github/workflows/verify.yml

@@ -14,7 +14,7 @@ jobs:
     name: "Verify Gradle"
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
       - uses: gradle/actions/wrapper-validation@v6
       - name: Set up JDK
         uses: actions/setup-java@v5