feat(api): Pin Python 3.11.8 until Django 5.0.5 is released

https://forum.djangoproject.com/t/send-mail-throws-unicodeencodeerror-under-python-3-11-9/29871
https://code.djangoproject.com/ticket/35361

api/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.11-alpine
+FROM python:3.11.8-alpine
 
 COPY --from=trajano/alpine-libfaketime /faketime.so /lib/libfaketime.so
 RUN mkdir -p /etc/faketime