chore(deps): update actions/checkout action to v6 (#234)

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

Author: renovate[bot]

.github/workflows/codeql-analysis.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.

.github/workflows/cpd.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Use Node.js 22
       uses: actions/setup-node@v6
       with:

.github/workflows/lint.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Use Node.js 22
       uses: actions/setup-node@v6
       with:

.github/workflows/npm-publish.yml

@@ -11,7 +11,7 @@ jobs:
         contents: read
         id-token: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           token: ${{ secrets.GH_PAT }} # Use your PAT here!
       - uses: actions/setup-node@v6

.github/workflows/sonarcloud.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Use Node.js 22
       uses: actions/setup-node@v6
       with:

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
         node-version: [22.x, 24.x, 25.x]
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Cache node_modules
         uses: actions/cache@v4
         with:

.github/workflows/vulnerabilities.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Use Node.js 22
       uses: actions/setup-node@v6
       with: