v1.21.6 - Security release

This release contains the following features and bug fixes:

• Security improvements - UPDATE ASAP
• Fixed bug with “Keep upright” property in KiCad 7 and below
• Fixed issue with avatars not being pulled from Gitlab
• Added account info sync from GitLab
• Dashboard UI fixes
• Invite/withdraw invite functionality fixes
• UTF8 text render improvements in Altium schematics
• Other minor improvements and fixes