Update ripgrep to 12.0.1 and re-add fish completions
This update re-adds fish completions which were previously removed (see D8236) because they were being provided by fish package.
Fish completions are now correctly distributed inside fish's vendor completions directory.
New release includes a minor bug fix relating to superfluous error messages when searching git repositories with sub-modules.
Search some sources directory for a string with ripgrep tool
Tested fish completions
Reviewers: Triage Team, JoshStrobl
Reviewed By: Triage Team, JoshStrobl
Differential Revision: https://dev.getsol.us/D8762