Mozilla extended support for Firefox 115 ESR on Windows 7, 8, and 8.1 and macOS 10.12 – 10.14 until August. It was due to end support last month, and they may consider extending it again.
Firefox ESRs are old versions that continue getting security updates, and Firefox 115 was released in 2023. https://support.mozilla.org/kb/firefox-users-windows-7-8-and-81-moving-extended-support