fix: Generating .regex.txt files ( Fixes #235, Fixes #236 )

RegEx/PII/Unredacted_SSN.regex.txt

@@ -1,6 +1,7 @@
 # Matches Unredacted Social Security Numbers
-(?<=(^|\D))                # Match after line start or a non-digit, so that random dashed numbers don't match.
-(?<AreaNumber>\d{3,3})     # 3 Digit Area Number (if allocated after 2011 no longer reflects area)
-\-(?<GroupNumber>\d{2,2})  # 2 Digit Group Number
-\-(?<SerialNumber>\d{4,4}) # 4 Digit Serial Number
+(?<=(?:^|
+\D))                       # Match after line start or a non-digit, so that random dashed numbers don't match.
+(?<AreaNumber>\d){3,3}     # 3 Digit Area Number (if allocated after 2011 no longer reflects area)
+\-(?<GroupNumber>\d){2,2}  # 2 Digit Group Number
+\-(?<SerialNumber>\d){4,4} # 4 Digit Serial Number