v18.3.0

• 💥 [Deprecation] Drop support for python 3.8 and set Python 3.9 as the minimum supported python version. (by @hinakhadim)
• 💥[Improvement] Rename Tutor's two branches (by @DawoudSheraz):
  • Rename master to release, as this branch runs the latest official Open edX release tag.
  • Rename nightly to main, as this branch runs the Open edX master branches, which are the basis for the next Open edX release.
• [Bugfix] Fix dropdown select rendering issue on light theme (by @DawoudSheraz)
  • ".wrapper-problem-response" did not need any dark theme variables outside dark-theme class for dropdown problems. This was causing the dropdown to use dark theme variables regardless of the theme that user selected.
• [Bugfix] Add dark-theme for Course Handouts and Course Updates that appears on Learning MFE Course Outline Page (by @hinakhadim)
• [Bugfix] Update dark-theme styles for ORA (Open Response Assessment) so that it becomes readable, usable, beautiful, and appealing (by @hinakhadim)
  • The readability of styles in the scss file is challenging and will be improved in subsequent releases.
• [Bugfix] Fix various dark theme issues with Teams tab on LMS. (by @DawoudSheraz)
• [Bugfix] Update dark-theme styles for Notes and Textbook Page (by @hinakhadim)