fix: SyntaxWarning for Escape Characters in String Literals

[ConduciveMocha]

What type of PR is this?

• bug
• cleanup

What this PR does / why we need it:

Removes SyntaxWarning: invalid escape sequence messages during server start.

As of 3.12, putting escape characters in string literals will cause this warning. This primarily effects regular expressions, requiring them to be raw strings instead of normal string literals. This pull requests fixes the warnings raised by the punctuation regular expression in the SearchFilter class and the slug check within the update function of the RepositoryCookbooks class.

Which issue(s) this PR fixes:

Fixes #4775

Special notes for your reviewer:

First PR -- Please let me know if I'm not meeting any of the contribution standards.

Testing

• Pytest had no failures
• Logged the result of searching recipes on both mealie-next and my branch with the search string !@#$%^&*()_-+="'<>,.?/~ and verified that the translation on query_search.py ln:25 had the same result.

Couldn't figure how the branch of code for the RepositoryCookbooks change is executed so would appreciate any pointers.

[michael-genson]

Thank you!

Couldn't figure how the branch of code for the RepositoryCookbooks change is executed

It only gets executed if a cookbook is created with a duplicate name, however this is covered in tests, so as long as they're passing no worries