Bump actions/upload-artifact from 4 to 7 (#330)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v7)

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

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/benchmark.yml

@@ -154,7 +154,7 @@ jobs:
 
       - name: Upload raw results
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: benchmark-results
           path: benchmarks/**/BenchmarkDotNet.Artifacts/results/*

.github/workflows/ci.yaml

@@ -61,7 +61,7 @@ jobs:
         run: dotnet fsi build.fsx -- --target Pack
 
       - name: Upload artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: nuget-${{ matrix.os }}
           path: artifacts/*.nupkg