requirements: requests version is fixed

[ihor-nahuliak]

Currently requests.txt contains:

requests==2.3.0
termcolor==1.1.0

It provokes conflicts with other libraries dependencies.
Please use >= dependency rule:

requests>=2.3.0
termcolor>=1.1.0

[aviindub]

hi there, i am running into this same issue and it is causing a ResolutionImpossible error in pip. many packages are requiring versions of requests greater than 2.3.0.