Ignore uv.lock in RAT exclusions (#13066)

This updates the RAT exclusion list to ignore generated uv.lock
files. These lockfiles are auto-generated and should not be modified
to carry project license headers.

Author: bneradt

ci/rat-regex.txt

@@ -22,6 +22,7 @@
 .*\.default$
 .*\.default\.in$
 .*\.config$
+(^|.*/)uv\.lock$
 .*\.yaml$
 .*\.gold$
 .*\.hrw4u$