plugins/clang-tidy: improve parser regex readability

1 job for !185 with clang-tidy-windows in 60 minutes and 4 seconds (queued for 31 minutes and 37 seconds)
detached
Status Job ID Name Coverage
  Build
failed #75961
linux kf5-qt5 qt5.12

01:00:04

47.0%
 
Name Stage Failure
failed
linux kf5-qt5 qt5.12 Build The script exceeded the maximum execution time set for the job
                                              14      10    71%   61,63-65
plugins/welcomepage/welcomepageview.cpp 25 24 96% 65
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TOTAL 141995 67648 47%
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ERROR: Job failed: execution took longer than 1h0m0s seconds