fix: 🐛 C compile failure 'longintrepr.h' file not found

Although fixed in
cython/cython@0.29.24...0.29.25,it won't work
until 0.29.30

setup.cfg

@@ -30,7 +30,7 @@ keywords = python-encrypt, import-hook
 
 [options]
 install_requires = 
-    Cython >= 0.29.24
+    Cython >= 0.29.30
     pycryptodome >= 3.14.1
     python-minifier >= 2.6.0
     click