Fix file magic warnings

[jstucke]

• fixes warnings like 'Warning: using regular magic file ...'
• bump FW magic version to v0.2.2

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 91.90%. Comparing base (aa041a9) to head (dce68c9).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1300 +/- ## ========================================== - Coverage 91.94% 91.90% -0.04% ========================================== Files 377 376 -1 Lines 22295 21038 -1257 ========================================== - Hits 20499 19336 -1163 + Misses 1796 1702 -94 ```

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