Bump actions/checkout from 5 to 6

.github/workflows/Code_Coverage.yml

@@ -35,7 +35,7 @@ jobs:
       - name: Install tools manually
         run: sudo apt-get install lcov gcovr
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Configure CMake
         run: cmake -DTEST=ON -DCODE_COVERAGE=ON -B ${{github.workspace}}/build; sudo apt-get install lcov gcovr

.github/workflows/Doxygen.yml

@@ -24,7 +24,7 @@ jobs:
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           token: ${{ secrets.PERSONAL_TOKEN }}
       - name: Generate build number

.github/workflows/benchmark.yml

@@ -33,7 +33,7 @@ jobs:
       #    cmake -E chdir "build" cmake -DCMAKE_BUILD_TYPE=Release ../
       #    cmake --build "build" --config Release
       #    sudo cmake --build "build" --config Release --target install
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Configure CMake
         # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.

.github/workflows/benchmark_pr.yml

@@ -32,7 +32,7 @@ jobs:
       #    cmake -E chdir "build" cmake -DCMAKE_BUILD_TYPE=Release ../
       #    cmake --build "build" --config Release
       #    sudo cmake --build "build" --config Release --target install
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Configure CMake
         # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.

.github/workflows/clang_format.yml

@@ -19,7 +19,7 @@ jobs:
           - "include/CXXGraph"
           - "test"
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Run clang-format style check
         uses: jidicula/clang-format-action@v4.16.0
         with:

.github/workflows/cmake.yml

@@ -36,7 +36,7 @@ jobs:
       #      cmake --build "build" --config Release
       #      sudo cmake --build "build" --config Release --target install
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Configure CMake
         # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.

.github/workflows/codacy.yml

@@ -36,7 +36,7 @@ jobs:
     steps:
       # Checkout the repository to the GitHub Actions runner
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
           # Run Codacy Analysis CLI
       - name: Run Codacy Analysis CLI

.github/workflows/codeql.yml

@@ -57,7 +57,7 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     # Add any setup steps before running the `github/codeql-action/init` action.
     # This includes steps like installing compilers or runtimes (`actions/setup-node`

.github/workflows/deploy_site.yml

@@ -12,7 +12,7 @@ jobs:
   build:
     runs-on: [ubuntu-latest]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Configure Yarn
         working-directory: ${{github.workspace}}/docusaurus

.github/workflows/flawfinder.yml

@@ -24,7 +24,7 @@ jobs:
       security-events: write
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: flawfinder_scan
         uses: david-a-wheeler/flawfinder@c57197cd6061453f10a496f30a732bc1905918d1

.github/workflows/gitlab_sync.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Git Repo Sync
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: action-pack/gitlab-sync@v3.03