Bump actions/upload-artifact from 4.3.4 to 4.3.6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.3.4 to 4.3.6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4.3.4...v4.3.6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/build-pull-request.yml

@@ -25,15 +25,15 @@ jobs:
           NODE_OPTIONS: '--max_old_space_size=4096'
         run: npm run build
       - name: Upload artifact
-        uses: actions/[email protected].4
+        uses: actions/[email protected].6
         with:
           name: preview
           path: dist
           retention-days: 1
       - name: Save pr number
         run: echo ${PR_NUMBER} > ./pr.txt
       - name: Upload pr number
-        uses: actions/[email protected].4
+        uses: actions/[email protected].6
         with:
           name: pr
           path: ./pr.txt