chore(deps): update actions/checkout action to v6 (#70)

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

Author: renovate[bot]

.github/workflows/build.yml

@@ -9,7 +9,7 @@ jobs:
 
     name: Gradle Setup
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: gradle/actions/wrapper-validation@v5
       - name: Set up JDK 17
         uses: actions/setup-java@v5
@@ -33,7 +33,7 @@ jobs:
 
     name: Test Project
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup JDK 17
         uses: actions/setup-java@v5
         with:
@@ -129,7 +129,7 @@ jobs:
 
     name: Build Java Project
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up JDK ${{ matrix.java-version }}
         uses: actions/setup-java@v5
         with:
@@ -148,7 +148,7 @@ jobs:
 
     name: Create Artifacts
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up JDK 17
         uses: actions/setup-java@v5
         with:
@@ -174,7 +174,7 @@ jobs:
     timeout-minutes: 30
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Set up JDK 17
         uses: actions/setup-java@v5
         with: