Security update for fetchmail

This update for fetchmail fixes the following issues:

- CVE-2021-39272: Fix failure to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH. (bsc#1190069)

This update was imported from the SUSE:SLE-15:Update update project.

Fixed bugs
bnc#1190069
VUL-0: CVE-2021-39272: fetchmail: STARTTLS session encryption bypassing
Selected Binaries
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