Build(deps): bump actions/setup-dotnet from 4 to 5

Bumps [actions/setup-dotnet](https://github.com/actions/setup-dotnet) from 4 to 5.
- [Release notes](https://github.com/actions/setup-dotnet/releases)
- [Commits](actions/setup-dotnet@v4...v5)

---
updated-dependencies:
- dependency-name: actions/setup-dotnet
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/test_sign-artifacts-workflow.yaml

@@ -44,7 +44,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v5
       - name: Setup .NET SDK
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@v5
         with:
           dotnet-version: 8.x
       - name: Download Signed Artifacts