ci(github-actions): Bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     name: General checks, tests and coverage reporting
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Use Node.js 20.11.0
       uses: actions/setup-node@v6
       with:

.github/workflows/commitlint.yml

@@ -16,7 +16,7 @@ jobs:
   commitlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: wagoid/commitlint-github-action@v6

.github/workflows/publish-mcp-registry.yml

@@ -35,7 +35,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Install MCP Publisher
       run: |
         MCP_PUBLISHER_VERSION="${{ inputs.mcp_publisher_version || env.DEFAULT_MCP_PUBLISHER_VERSION }}"

.github/workflows/release-please.yml

@@ -28,7 +28,7 @@ jobs:
       id-token: write # Required for trusted publishing via OIDC (https://docs.npmjs.com/trusted-publishers)
     steps:
     - name: Checkout
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Node.js LTS
       uses: actions/setup-node@v6
       with:

.github/workflows/reuse-compliance.yml

@@ -16,6 +16,6 @@ jobs:
     name: Compliance Check
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Execute REUSE Compliance Check
       uses: fsfe/reuse-action@v6

.github/workflows/test.yml

@@ -22,7 +22,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
 
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Setup Node.js
       uses: actions/setup-node@v6