Removed vulnerable versions of flask and requests

Author: jeremydvoss

contrib/opencensus-ext-flask/setup.py

@@ -49,7 +49,7 @@
     include_package_data=True,
     long_description=open('README.rst').read(),
     install_requires=[
-        'flask >= 0.12.3, < 3.0.0, != 1.1.3',
+        'flask >= 0.12.3, < 3.0.0, != 1.1.3, != 2.2.3, != 2.2.4',
         'opencensus >= 0.12.dev0, < 1.0.0',
     ],
     extras_require={},

contrib/opencensus-ext-requests/setup.py

@@ -49,7 +49,7 @@
     include_package_data=True,
     long_description=open('README.rst').read(),
     install_requires=[
-        'opencensus >= 0.12.dev0, < 1.0.0',
+        'opencensus >= 0.12.dev0, < 1.0.0, != 2.28.2, != 2.29.0, != 2.30.0',
         'requests >= 2.19.0, < 3.0.0',
         'wrapt >= 1.0.0, < 2.0.0',
     ],