deps: update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/build-and-test.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout Repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Setup Gradle
       uses: gradle/actions/setup-gradle@v5
       with:
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout Repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Setup Gradle
       uses: gradle/actions/setup-gradle@v5
       with:
@@ -37,7 +37,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v5
         with:
@@ -49,7 +49,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v5
         with: