Bump actions/upload-artifact from 5 to 6 (#3253)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/nupkg-release.yml

@@ -21,7 +21,7 @@ jobs:
       run: dotnet pack src\Nupkg\ErikEJ.EntityFrameworkCore.9.SqlServer.Dacpac\ErikEJ.EntityFrameworkCore.9.SqlServer.Dacpac.csproj
 
     - name: Publish artifacts
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: Nupkg
         path: |

.github/workflows/vsix.yml

@@ -127,7 +127,7 @@ jobs:
 
     - name: Publish artifacts
       if: github.ref == 'refs/heads/master' && github.repository_owner == 'erikej' && (github.event_name == 'push' ||  github.event_name == 'workflow_dispatch')
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: Artifacts
         path: |