Various updates
- Prevent memory leaks for Windows users
--> This resolves #2991 - Improve the UC Mode experience on Windows
--> This resolves #2998
--> This resolves #2999 - Improve error-handling for "by"-selection
--> This resolves #3003 - Update the default geckodriver version to v0.35.0
--> This resolves #3005 - Refresh Python dependencies