updates error checking & github actions

[danielpeter]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 14 lines in your changes missing coverage. Please review.

Project coverage is 53.20%. Comparing base (7d49b76) to head (54b634b).
Report is 1 commits behind head on devel.

Files with missing lines	Patch %	Lines
src/shared/read_source_file.f90	14.28%	6 Missing ⚠️
src/specfem2D/setup_sources_receivers.F90	0.00%	6 Missing ⚠️
src/shared/read_parameter_file.F90	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##            devel    #1242       +/-   ##
===========================================
+ Coverage   36.65%   53.20%   +16.55%     
===========================================
  Files         171      171               
  Lines       30432    31412      +980     
===========================================
+ Hits        11154    16714     +5560     
+ Misses      19278    14698     -4580     

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