1) Add new `test_graphene` test module for expanded testing coverage;
2) Introduce `test_drf` module in `engine/blog` for improved API testing;
Fixes:
1) Remove unnecessary `--extra testing` flag from Dockerfile to streamline dependencies;
2) Update `uv.lock` with newer versions of dependencies (`certifi`, `coverage`, `django-constance`) for enhanced security and functionality;
Extra:
1) Remove deprecated packages (`bandit`, `cfgv`, `distlib`) from `uv.lock` for cleanup;
2) Adjust `uv.lock` content and formatting to be consistent with updated dependencies.
Fixes: 1) Fix inconsistencies in string concatenation for English translations; 2) Correct missing or misplaced message references in locale files;
Extra: Resolve spacing and encoding inconsistencies in translation files.
