Firefox impersonation was not updated in a long while. Add impersonation
for Firefox 109. The TLS signature is identical to previous versions,
with the usual changes to the HTTP headers.
Update NSS to the latest version as well, even though it is not
strictly necessary for the impersonation.
Chrome 107 was recently released. The only difference in signature from
previous Chrome versions is that an HTTP2_NO_SERVER_PUSH setting is sent
in the HTTP2 SETTINGS frame.
lwthiker