Add ‘regex’ package to blacklist

It appears that regex (a alternative implementation of the python ‘re’ module) uses C code.

Author: Ong Yong Xin

data/pip_blacklist.json

@@ -21,6 +21,7 @@
     "tensorflow": ["C", true, null],
     "pyobjc": ["C", true, null],
     "pyttsx3": ["incompatible_dependency", true, null],
-    "futures": ["bugged", true, null]
+    "futures": ["bugged", true, null],
+    "regex": ["C", true, null],
 }
 }