Bump vws-auth-tools from 2019.12.27.1 to 2019.12.28.3

Bumps [vws-auth-tools](https://github.com/adamtheturtle/vws-auth-tools) from 2019.12.27.1 to 2019.12.28.3.
- [Release notes](https://github.com/adamtheturtle/vws-auth-tools/releases)
- [Changelog](https://github.com/adamtheturtle/vws-auth-tools/blob/master/CHANGELOG.rst)
- [Commits](VWS-Python/vws-auth-tools@2019.12.27.1...2019.12.28.3)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

requirements.txt

@@ -1,4 +1,4 @@
-VWS-Auth-Tools==2019.12.27.1
+VWS-Auth-Tools==2019.12.28.3
 requests==2.22.0
 timeout-decorator==0.4.1
 urllib3==1.25.7