Update ci

[urfeex]

This is a cleanup of our current CI jobs. Particularly, this chages:

• Push event triggers only for master branch
• Updated clang-format
• Removed iron workflow
• Improved running ICI in ACT
• Enabled clang-tidy in ICI

Clang-tidy is currently only enabled in non-pedantic mode, as we have wrongly-named identifiers in our API. I will open a separate PR about this.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 71.71%. Comparing base (cf30c14) to head (851a1ec).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
src/ur/ur_driver.cpp	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #239      +/-   ##
==========================================
- Coverage   71.79%   71.71%   -0.09%     
==========================================
  Files          71       71              
  Lines        2783     2782       -1     
  Branches      351      351              
==========================================
- Hits         1998     1995       -3     
- Misses        594      596       +2     
  Partials      191      191              

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