arkenfox user.js v122

🟦 links:

• FF122 release notes | FF122 for developers | FF122 security advisories
• FF121 release notes | FF121 for developers | FF121 security advisories
• FF120 release notes | FF120 for developers | FF120 security advisories

🟪 issues:

• diffs FF121-FF122 | diffs FF120-FF121 | diffs FF119-FF120
• changelog ... v120, v121, v122

🟩 changelog summary

Still no pref changes, but it's been a while :) A reminder to never wait on arkenfox to update Firefox.

This release is mostly about adding information about FPP since this is now live (for non-RFP users) - also see #1804 - so the sooner this info is there, the better