⬆️ [bump][ci] Bump actions/upload-artifact from 5 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v5...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci-pipeline.yml

@@ -87,7 +87,7 @@ jobs:
           scripts/build/openapi-spec.sh openapi.json
 
       - name: "⬆️ Upload artifact"
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v7
         with:
           name: openapi-schema
           path: backend/openapi.json