Fix regex for quoting file names to include

[dpvc]

The + was missing from the regex for quoting file and directory names (argh!).

This causes these to not properly match directories in node_modules when pnpm is used to install dependencies, since it uses hidden directories in .pnpm that include plus signs.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.71%. Comparing base (4d1e195) to head (efe57da).
Report is 25 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff             @@
##           develop    #1300     +/-   ##
==========================================
  Coverage    86.71%   86.71%             
==========================================
  Files          337      337             
  Lines        83979    83979             
  Branches      4750     3124   -1626     
==========================================
  Hits         72826    72826             
- Misses       11130    11153     +23     
+ Partials        23        0     -23     

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[zorkow]

lgtm.