OPENSUSE-SU-2021:1591-1 Security update for fetchmail

This update for fetchmail fixes the following issues: - CVE-2021-36386: Fixed DoS or information disclosure in some configurations bsc1188875. - CVE-2021-39272: Fixed STARTTLS session encryption bypassing fetchmail-SA-2021-02 bsc1190069. - Update to 6.4.22 bsc1152964, jscSLE-18159, jscSLE-17903,...