build(upgrade-requests-lib): address moderate level vulnerability (#40)

This commit addresses the vulnerability of unintended leak of proxy-authorization header. You can read more about the vulnerability [here](https://security.snyk.io/vuln/SNYK-PYTHON-REQUESTS-5595532). As this vulnerability is addressed in version 2.31.0 which is why the upgraded version is 2.31.0 which is the latest at the moment.

Author: sufyankhanrao

requirements.txt

@@ -2,6 +2,6 @@ jsonpickle~=3.0.1, >= 3.0.1
 python-dateutil~=2.8.1
 enum34~=1.1, >=1.1.10
 apimatic-core-interfaces~=0.1.0
-requests~=2.28.1
+requests~=2.31
 setuptools~=67.6.0
 jsonpointer~=2.3

setup.py

@@ -12,7 +12,7 @@
 
 setup(
     name='apimatic-core',
-    version='0.2.2',
+    version='0.2.3',
     description='A library that contains core logic and utilities for '
                 'consuming REST APIs using Python SDKs generated by APIMatic.',
     long_description=long_description,
@@ -26,7 +26,7 @@
         'apimatic-core-interfaces~=0.1.0',
         'jsonpickle~=3.0.1, >= 3.0.1',
         'python-dateutil~=2.8.1',
-        'requests~=2.28.1',
+        'requests~=2.31',
         'enum34~=1.1, >=1.1.10',
         'setuptools~=66.0.0',
         'jsonpointer~=2.3'