chore: run mypy

[psegedy]

• run mypy in github actions
• errors in csaf types are resolved in feat(csaf): vulnerabilities parsing #1067
• remove unnecessary steps from tests and run flake8 in poetry venv

Secure Coding Practices Checklist GitHub Link

• https://github.com/RedHatInsights/secure-coding-checklist

Secure Coding Checklist

• Input Validation
• Output Encoding
• Authentication and Password Management
• Session Management
• Access Control
• Cryptographic Practices
• Error Handling and Logging
• Data Protection
• Communication Security
• System Configuration
• Database Security
• File Management
• Memory Management
• General Coding Practices

[jira-linking]

Referenced Jiras:
https://issues.redhat.com/browse/RHINENG-7736

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ef41296) 61.32% compared to head (289a8d9) 61.32%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1070   +/-   ##
=======================================
  Coverage   61.32%   61.32%           
=======================================
  Files          69       69           
  Lines        6322     6322           
=======================================
  Hits         3877     3877           
  Misses       2445     2445           

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[jdobes]

/retest