incompatible requirements

In trying to setup a new virtual environment I had the following error:
```
gcb-web-auth 0.10 has requirement PyJWT==1.5.2,
but you'll have pyjwt 1.4.2 which is incompatible.
gcb-web-auth 0.10 has requirement requests==2.18.1,
but you'll have requests 2.12.3 which is incompatible.
gcb-web-auth 0.10 has requirement requests-oauthlib==0.8.0,
but you'll have requests-oauthlib 0.7.0 which is incompatible.
```
Upgrading the versions to match gcb-web-auth's versions got past the issue.
We should see if these are still needed here or does gcb-web-auth remove the need for these requirements.