chore(custom_checks): Skip binary files when checking for deprecated typing

[msbrogli]

Motivation

If a file is open in vim, this skip wrongfully fails because the .swp file concatenate lines using a custom separator so the whole file is considered as in one line.

Acceptance Criteria

1. Use grep -I option to skip binary files.

Checklist

• If you are requesting a merge into master, confirm this code is production-ready and can be included in future releases as soon as it gets merged

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c47f06e) 85.01% compared to head (50a18a9) 85.01%.

❗ Current head 50a18a9 differs from pull request most recent head b0642e2. Consider uploading reports for the commit b0642e2 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #846   +/-   ##
=======================================
  Coverage   85.01%   85.01%           
=======================================
  Files         271      271           
  Lines       22368    22362    -6     
  Branches     3420     3416    -4     
=======================================
- Hits        19017    19012    -5     
+ Misses       2675     2674    -1     
  Partials      676      676           

see 3 files with indirect coverage changes

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[jansegre]

Makes sense. I set up vim to store temp files in a dedicated dir, so I never experienced this.