[AAP-59285] Adding openapi specification validation as a part of the sanity CI checks (ansible#887)

Adding CI checks for open API specification validation

Author: tyraziel

.github/workflows/sanity.yml

@@ -35,3 +35,9 @@ jobs:
 
       - name: Run help text check
         run: ./manage.py help_text_check --applications=dab --ignore-file=./.help_text_check.ignore
+
+      - name: Validate OpenAPI Specification
+        run: |
+          ./manage.py spectacular --format openapi-json --file dab-openapi.json
+          openapi-spec-validator dab-openapi.json
+          echo "✅ OpenAPI schema validation passed"

requirements/requirements_dev.txt

@@ -12,6 +12,7 @@ isort==6.0.0            # Linting tool, if changed update pyproject.toml as well
 tox
 tox-docker
 typeguard
+openapi-spec-validator
 pytest
 pytest-asyncio
 pytest-xdist