feat: Imported Firefox 85.0b5 schema

[rpl]

This PR includes the following changes to the API schemas:

• new browser.privacy.network.httpsOnlyMode privacy browser setting (Bug 1678306)

[codecov-io]

Codecov Report

Merging #3538 (5237bb3) into master (914be4b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3538   +/-   ##
=======================================
  Coverage   99.78%   99.78%           
=======================================
  Files          52       52           
  Lines        1819     1819           
  Branches      385      385           
=======================================
  Hits         1815     1815           
  Misses          4        4           

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