feat(link-rel-preload): update Firefox support (#8769)
feat(link-rel-preload): update Firefox support (#8769)

* feat(link-rel-preload): update Firefox support

two new compat entry added to both desktop and android versions:

* the new implementation was landed in 78 behind the flag
* enabled-by-default in 85
https://hg.mozilla.org/releases/mozilla-beta/rev/c46b088d9a1d

* fix(link-rel-preload): bump firefox_android version to 79

per https://github.com/mdn/browser-compat-data/issues/4983 bcd data skipped a few versions of FxA.
chrisdavidmills/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data