Bump relative-ci/agent-upload-artifact-action from 1 to 2

Bumps [relative-ci/agent-upload-artifact-action](https://github.com/relative-ci/agent-upload-artifact-action) from 1 to 2.
- [Release notes](https://github.com/relative-ci/agent-upload-artifact-action/releases)
- [Commits](relative-ci/agent-upload-artifact-action@v1...v2)

---
updated-dependencies:
- dependency-name: relative-ci/agent-upload-artifact-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/build.yml

@@ -36,6 +36,6 @@ jobs:
           name: dist
           path: dist
       - name: Upload webpack stats artifact
-        uses: relative-ci/agent-upload-artifact-action@v1
+        uses: relative-ci/agent-upload-artifact-action@v2
         with:
           webpackStatsFile: ./webpack-stats.json