Triaged more tests

[lmammino]

Closes #7

We currently have 528 certificate tests passing on a total of 577 certificates (91% success rate)

The main issues identified are the following:

• KID in unprotected header (#1): 30 failing tests
• RSA Signature (#2): 13 failing tests
• Invalid/missing COSE tag (#22): 4 failing tests
• Invalid test data (different dates reported in the JSON object): 2 failing tests (for these ones we can probably just improve the test or ignore them)

[codecov-commenter]

Codecov Report

:exclamation: No coverage uploaded for pull request base (main@4e73ec3). Click here to learn what that means. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #23   +/-   ##
=======================================
  Coverage        ?   82.24%           
=======================================
  Files           ?       10           
  Lines           ?     1042           
  Branches        ?        0           
=======================================
  Hits            ?      857           
  Misses          ?      185           
  Partials        ?        0           

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[lmammino]

As mentioned offline, it's worth marking the skipped tests as #[skip] rather than commenting them out! thanks @vescoc for the suggestion!