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] <support@github.com>

Author: dependabot[bot]

.github/workflows/invoke-codeql-analysis.yml

@@ -23,7 +23,7 @@ jobs:
     runs-on: "ubuntu-latest"
     steps:
       - name: "Checkout Repository"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
         with:
           fetch-depth: "0"
       - name: "Initialize CodeQL"

.github/workflows/publish-ecmascript-deno.yml

@@ -53,7 +53,7 @@ jobs:
     runs-on: "ubuntu-latest"
     steps:
       - name: "Checkout Repository"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
         with:
           ref: "${{inputs.commit || github.ref}}"
       - name: "Setup Deno"

.github/workflows/review-ecmascript-deno.yml

@@ -31,7 +31,7 @@ jobs:
       CDV_RUN_LITE: "${{matrix.run_on != 'ubuntu-latest'}}"
     steps:
       - name: "Checkout Repository"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
       - name: "Setup Deno"
         uses: "denoland/setup-deno@v2"
         with:

.github/workflows/scan-virus.yml

@@ -43,7 +43,7 @@ jobs:
     runs-on: "ubuntu-latest"
     steps:
       - name: "Checkout Repository"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
         with:
           fetch-depth: "0"
       - name: "Scan Repository"

.github/workflows/sync-labels.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: "ubuntu-latest"
     steps:
       - name: "Checkout Repository"
-        uses: "actions/checkout@v5"
+        uses: "actions/checkout@v6"
       - name: "Sync Labels"
         uses: "EndBug/label-sync@v2"
         with: