chore(deps): Bump actions/checkout from 6 to 7

Bumps [actions/checkout](https://github.com/actions/checkout) from 6 to 7.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6...v7)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/release-please-gha.yml

@@ -19,7 +19,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Generate GitHub App token
         id: app-token

.github/workflows/release-please.yml

@@ -19,7 +19,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Generate GitHub App token
         id: app-token

.github/workflows/validatePublicAPISurface.yml

@@ -16,7 +16,7 @@ jobs:
   validate-public-api-surface:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: microsoftgraph/kiota-dom-export-diff-tool/export@main
         id: generatePatch
       - uses: microsoftgraph/kiota-dom-export-diff-tool/tool@main

.github/workflows/validatePullRequest.yml

@@ -18,7 +18,7 @@ jobs:
     env:
       solutionName: Microsoft.Graph.sln
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Setup .NET
         uses: actions/setup-dotnet@v5.4.0
         with: