Bump actions/checkout from 4 to 6

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>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -46,7 +46,7 @@ jobs:
     if: "!contains(github.event.head_commit.message, '[SkipCI]')"
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v4
         with:
           distribution: temurin
@@ -138,7 +138,7 @@ jobs:
           - {'api_level': 21, 'api_type_target': 'default', 'arch': 'x86_64'}
           - {'api_level': 21, 'api_type_target': 'default', 'arch': 'x86'}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v4
         with:
           distribution: temurin

.github/workflows/incrementVersion.yml

@@ -38,7 +38,7 @@ jobs:
       contents: write
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           # A branch is required for post release version increment commit
           ref: ${{ github.event.ref }}

.github/workflows/release.yml

@@ -54,7 +54,7 @@ jobs:
     environment: OpenDocumentAppRelease
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           # A branch is required for post release version increment commit
           ref: ${{ github.event.ref }}