chore(deps): bump actions/checkout from 6 to 7 in the actions group

Bumps the actions group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `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
  dependency-group: actions
...

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

Author: dependabot[bot]

.github/workflows/code-style.yml

@@ -12,7 +12,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v5
       with:

.github/workflows/nuget-package-tests.yml

@@ -17,7 +17,7 @@ jobs:
       matrix:
         os: [windows-latest, ubuntu-latest, macos-latest]
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v5
         with:

.github/workflows/publish_docker.yml

@@ -15,7 +15,7 @@ jobs:
       contents: read    # This is required for actions/checkout to succeed
     environment: Docker
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - name: Azure login
       uses: azure/login@v3
       with:

.github/workflows/test_docker.yml

@@ -27,7 +27,7 @@ jobs:
         flavor: [noble, resolute]
         runs-on: [ubuntu-24.04, ubuntu-24.04-arm]
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v5
       with:

.github/workflows/tests.yml

@@ -21,7 +21,7 @@ jobs:
         browser: [chromium, firefox, webkit]
         os: [windows-latest, ubuntu-latest, macos-15-large]
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v5
         with:

.github/workflows/tests_harness.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 90
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v5
         with:

.github/workflows/validate-nuget-packages.yml

@@ -12,7 +12,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v5
       with: