build: upgrade dependency package

Author: mayneyao

Pipfile

@@ -4,12 +4,12 @@ url = "https://pypi.org/simple"
 verify_ssl = true
 
 [dev-packages]
-flake8 = "==3.8.4"
+# flake8 = "==3.8.4"
 black = "==20.8b1"
 autopep8 = "*"
 
 [packages]
-requests = "==2.24.0"
+requests = "==2.27.1"
 pydantic = "==1.6.2"
 environs = "==8.0.0"