ci(gh-actions): Bump actions/checkout from 6.0.2 to 6.0.3 (#510)

Bumps [actions/checkout](https://github.com/actions/checkout) from 6.0.2 to 6.0.3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6.0.2...v6.0.3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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/copilot-setup-steps.yml

@@ -20,7 +20,7 @@ jobs:
   copilot-setup-steps:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
 
       - name: Setup .NET SDK
         uses: actions/setup-dotnet@v5.3.0

.github/workflows/dotnet.yml

@@ -19,7 +19,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
       - name: Setup .NET SDK # detected from global.json
         uses: actions/setup-dotnet@v5.3.0
       - name: Restore .NET tools
@@ -55,7 +55,7 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
       - name: Setup .NET SDK
         uses: actions/setup-dotnet@v5.3.0
         with:

.github/workflows/release.yml

@@ -21,7 +21,7 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v6.0.2
+      - uses: actions/checkout@v6.0.3
       - name: Setup .NET SDK
         uses: actions/setup-dotnet@v5.3.0
         with: