Bump actions/upload-artifact from 2 to 3 (#3079)

Author: dependabot[bot]

.github/workflows/agp-matrix.yml

@@ -78,7 +78,7 @@ jobs:
 
       - name: Upload test results
         if: always()
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: test-results-AGP${{ matrix.agp }}-Integrations${{ matrix.integrations }}
           path: |