3.4.6 Linux RC1

Fixed

• Don't show certificate error dialog when probing for endpoint kind - desktop#18991
• Colorize multi-line strings in toml - desktop#14333
• Unset GIT_SEQUENCE_EDITOR when rebasing - desktop#15413
• Use api. subdomain for requests to GHE.com hosts - desktop#19312
• Migrate existing GHE account endpoints to the new api. subdomain - desktop#19319
• Right-clicking on diff checkmarks displays the context menu - desktop#19302
• Arguments with spaces are passed correctly to custom editors or shells on Windows - desktop#19218

Removed

• Remove staggered updates block in about dialog - desktop#19274