Prepare 3.3.0 release and update master to main

[justin808]

Summary

Prepares the repository for the 3.3.0 release and updates all internal documentation links from the master branch to the main branch. The 3.3.0 release adds support for Propshaft server rendering.

Changes

• Updated CHANGELOG.md with 3.3.0 release entry (2024-11-22)
• Updated all internal GitHub links from /blob/master/ and /tree/master/ to /blob/main/ and /tree/main/
• Updated VERSIONS.md to reflect main branch instead of master

Pull Request checklist

• [x] Update documentation
• [x] Update CHANGELOG file
• ~[ ] Add/update test to cover these changes~