fix: Werkzeug 2.0.0 breaking changes

Author: weakish

requirements.txt

@@ -4,7 +4,7 @@ iso8601>=0.1.14
 six>=1.11.0
 qiniu>=7.1.4,<7.2.4
 requests>=2.25.1
-Werkzeug>=0.16.0,<=2.0.0
+Werkzeug>=0.16.0,<2.0.0
 secure-cookie>=0.1.0,<1.0.0
 gevent>=21.1.0,<22.0.0
 typing; python_version < '3.5'

setup.py

@@ -12,7 +12,7 @@
     'six>=1.11.0',
     'qiniu>=7.1.4,<7.2.4',
     'requests>=2.25.1',
-    'Werkzeug>=0.16.0,<=2.0.0',
+    'Werkzeug>=0.16.0,<2.0.0',
     'secure-cookie>=0.1.0,<1.0.0',
     'gevent>=21.1.0,<22.0.0',
     "typing; python_version < '3.5'"