Bump actions/upload-artifact from 5 to 6

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]>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -98,7 +98,7 @@ jobs:
 
     - name: '[Ubuntu] Upload Artifact'
       if: matrix.os == 'ubuntu-latest'
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: ${{ env.PROJECT_ALIAS }}-ci-${{ github.run_number }}
         path: |
@@ -123,7 +123,7 @@ jobs:
 
     - name: '[Windows] Upload test coverage report'
       if: matrix.os == 'windows-latest'
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: ${{ env.PROJECT_ALIAS }}-coverage-ci-${{ github.run_number }}
         path: coveragereport/

.github/workflows/release.yml

@@ -84,7 +84,7 @@ jobs:
 
     - name: 'Upload test coverage report'
       continue-on-error: true
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: ${{ env.PROJECT_ALIAS }}.${{ github.event.inputs.new_package_version }}-coverage-${{ env.GITHUB_REF_SLUG }}-${{ github.run_number }}
         path: coveragereport/
@@ -95,7 +95,7 @@ jobs:
         dotnet pack -c Release --no-build src/${{ env.PROJECT_NAME }}/${{ env.PROJECT_NAME }}.csproj --include-symbols -o ${{ env.ARTIFACT_DIR }}
 
     - name: Upload Artifact
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: ${{ env.PROJECT_ALIAS }}.${{ github.event.inputs.new_package_version }}-${{ env.GITHUB_REF_SLUG }}-${{ github.run_number }}
         path: |