[Update] 更新依赖版本号

requirements/requirements.txt

@@ -47,7 +47,7 @@ olefile==0.44
 openapi-codec==1.3.2
 paramiko==2.4.2
 passlib==1.7.1
-Pillow==4.3.0
+Pillow==6.2.0
 pyasn1==0.4.2
 pycparser==2.19
 pycrypto==2.6.1
@@ -68,7 +68,7 @@ uritemplate==3.0.0
 urllib3==1.25.2
 vine==1.1.4
 drf-yasg==1.9.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 drf-nested-routers==0.91
 aliyun-python-sdk-core-v3==2.9.1    
 aliyun-python-sdk-ecs==4.10.1