build: Update gitlint to use regex search

Author: jimmidyson

.gitlint

@@ -8,6 +8,7 @@
 contrib=contrib-title-conventional-commits
 # Do not require a body in the git commit.
 ignore=body-is-missing
+regex-style-search=True
 
 [body-max-line-length]
 line-length=120