chore: bump actions/upload-artifact from 5 to 6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/app-test.yml

@@ -33,7 +33,7 @@ jobs:
         run: pnpm app:pack
 
       - name: Upload packed app as artifact
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: app-bundle.zip
           path: ./cookbooks/app-react/app-bundle.zip

.github/workflows/pr.yml

@@ -101,7 +101,7 @@ jobs:
         run: node process-turbo-build-log.cjs > tsc-build.log
 
       - name: upload build log
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           path: tsc-build.log