Update proc_creation_win_findstr_security_keyword_lookup.yml

[MalGamy12]

Summary of the Pull Request

Update Rule: security Tools Keyword Lookup Via Findstr.EXE

Changelog

Update proc_creation_win_findstr_security_keyword_lookup.yml

Example Log Event

Add some security keywords to the list. https://www.joesandbox.com/analysis/1547706/0/html

Fixed Issues

SigmaHQ Rule Creation Conventions

• If your PR adds new rules, please consider following and applying these conventions

[nasbench]

Also requested by https://github.com/SigmaHQ/sigma/issues/5539