https://www.mozilla.org/en-US/firefox/74.0/releasenotes/
Security Vulnerabilities fixed in Firefox 74 - Mozilla Foundation Security Advisory 2020-08
Android 版 Firefox 68.6.0
https://www.mozilla.org/en-US/firefox/android/68.6.0/releasenotes/
Security Vulnerabilities fixed in Firefox ESR 68.6 - Mozilla Foundation Security Advisory 2020-09