RC option 'lcov_branch_coverage' is deprecated

[vveliev]

When running this action with lcov version '2.0-1' I'm getting deprecated warning:

genhtml: WARNING: RC option 'lcov_branch_coverage' is deprecated.  Consider using 'branch_coverage. instead.  (Backward-compatible support will be removed in the future

[beeb]

@zgosalvez this is now making the action fail with an error. Seems the like the deprecation period is over and needs to be fixed ASAP.

genhtml: ERROR: line 158 of src/File.sol has branchcov but no linecov data

Interestingly, I have the same error locally (genhtml 2.3) if I put --rc lcov_branch_coverage=1 or --rc branch_coverage=1 but I don't have an error if I remove the parameter completely.

[vveliev]

@beeb you can check my fork if you need fix right now, it's working fine for me, but would be nice to fix it here

[beeb]

@zgosalvez this is now making the action fail with an error.

You can ignore this comment. The problem comes from a badly formatted lcov file and has nothing to do with this action.

[zgosalvez]

Thanks for bumping this up! @vveliev, care to check PR #312 before I merge it?