build(deps): bump actions/checkout from 4 to 6 (#335)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...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] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/pr-validation.yml

@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 

.github/workflows/publish.yml

@@ -24,7 +24,7 @@ jobs:
     name: Publish EA release to NPM
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.ref_name }}
           fetch-depth: 0
@@ -90,7 +90,7 @@ jobs:
           rm releasebranch.txt
 
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ (github.event_name == 'workflow_run' && steps.releasebranch.outputs.branch) || github.ref }}
           fetch-depth: 0

.github/workflows/push-to-registry.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install node 24
         uses: actions/setup-node@v6

.github/workflows/release.yml

@@ -24,7 +24,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/test.yml

@@ -25,7 +25,7 @@ jobs:
       MAIN_NODE_VER: '24'
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Install node ${{ matrix.node }}
         uses: actions/setup-node@v5