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

.github/workflows/codeql.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v4

.github/workflows/continuous-integration.yml

@@ -24,7 +24,7 @@ jobs:
             os: macos-latest
     steps:
       - name: Checkout Project
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Setup Java 8
         uses: actions/setup-java@v5
         with:

.github/workflows/labelsync.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Project
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           sparse-checkout: .github/labels.yml
           sparse-checkout-cone-mode: false

.github/workflows/publish.yml

@@ -10,7 +10,7 @@ jobs:
     if: github.repository_owner == 'favware'
     steps:
       - name: Checkout Project
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           ref: main

.github/workflows/static-documentation.yml

@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Setup Pages
         uses: actions/configure-pages@v5
       - name: Setup Java 8