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.yml

@@ -9,7 +9,7 @@ jobs:
 
     steps:
       - name: Checkout GitHub repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       #Official documentation seems incomplete. To avoid failure when importing key: 
       #https://stackoverflow.com/questions/61096521/how-to-use-gpg-key-in-github-actions
@@ -45,7 +45,7 @@ jobs:
       run:
         working-directory: net
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: actions/setup-dotnet@v5.3.0
         with:
             dotnet-version: '10.0.x'

.github/workflows/test.yml

@@ -31,7 +31,7 @@ jobs:
       fail-fast: false
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: actions/setup-java@v5
         with:
           distribution: 'temurin'
@@ -149,7 +149,7 @@ jobs:
       run:
         working-directory: net
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: actions/setup-dotnet@v5.3.0
         with:
             dotnet-version: '10.0.x'