chore(deps): update actions/upload-artifact action to v6 (#991)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/e2e-test.yaml

@@ -153,7 +153,7 @@ jobs:
         if: ${{ always() }}
         run: docker cp tilt-control-plane:/var/log .logs
 
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         if: ${{ always() }}
         with:
           name: ${{ inputs.e2e-selector }}-logs