4.18.0 - Upgrade to Selenium 4.12.0

Upgrade to Selenium 4.12.0

• This resolves #2047
• Drop support for Python 3.6 and Opera
• Refresh Python dependencies
• This resolves #1979

What's Changed

• Upgrade Selenium to 4.12.0 by @mdmintz in #2053

Full Changelog: v4.17.14...v4.18.0