chore(deps): update actions/upload-artifact action to v6

Author: renovate[bot]

.github/workflows/continuous.yml

@@ -53,12 +53,12 @@ jobs:
           NUGET_API_KEY: ${{ secrets.NUGET_API_KEY }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: 'Publish: test-results'
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: test-results
           path: test-results
       - name: 'Publish: artifacts'
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: artifacts
           path: artifacts