Warnings about urllib3 and chardet

**Describe the bug**
Not exactly a bug because it seems to run fine, but I get `RequestDependencyWarning: urllib3 (1.26.7) or charget (4.0.0) doesn't match a supported version!`

**To Reproduce**
Run search_tweets.py

**Expected behavior**
Script should run without warnings

**Environment**
 - OS: Ubuntu 20.10
 - Python version 3.8


