Fix slow transactions

[TorrentofShame]

Changes the k8s manifest for the backend deployment to allow for higher cpu limit and higher resource requests.

Also adds more Sentry Spans to help track performance of the create_hacker endpoint; however, is not apart of #62.

• fixes: #62

Checklist:

• [x] Add an entry in CHANGELOG.md summarizing the change.
• [x] Run tests, with no tests failed.

[github-actions[bot]]

File	Coverage
All files	72%	:x:
src/__init__.py	86%	:white_check_mark:
src/api/__init__.py	85%	:white_check_mark:
src/api/auth.py	43%	:x:
src/api/club_events.py	66%	:x:
src/api/email_verification.py	35%	:x:
src/api/hackers.py	55%	:x:
src/common/decorators.py	87%	:white_check_mark:
src/common/init_defaults.py	56%	:x:
src/common/json.py	77%	:white_check_mark:
src/common/jwt.py	66%	:x:
src/common/mail.py	45%	:x:
src/models/hacker.py	95%	:white_check_mark:
src/models/sponsor.py	64%	:x:
src/models/user.py	88%	:white_check_mark:
src/tasks/__init__.py	78%	:white_check_mark:
src/tasks/clubevent_tasks.py	19%	:x:
src/tasks/mail_tasks.py	45%	:x:

Minimum allowed coverage is 75%

Generated by :monkey: cobertura-action against d379f8be406a343c8e9efcb3b5e8b68ab821f683