OSS Fuzzing SIG needs an OSSF Mailing list established

[mrutkows]

The group still appears to be using a Google group (as appears on README):
https://groups.google.com/g/fuzzing-collaboration

(which is under a privately managed google group)

[mrutkows]

FWIW, I searched under OSSF (parent) as best I could but did not find one. Pardon if I somehow missed it; regardless, the SIG is still using the private one...