mail/fetchmail: update to 6.4.22.rc3

This fixes an IMAP protocol issue affecting all but the first IMAP
server in a run. It also updates translations.

PR: 258146
MFH: 2021Q3
Approved by: Corey Halpin (maintainer)

(cherry picked from commit 1e6092d18142f7dafb2e251ce41846a39e8f2e3b)