Update to 1.3.7b
    
    - New upstream release 1.3.7b
      - Fixed occasional segfaults with FTPS data transfers using TLSv1.3, when
        session tickets could not be decrypted (GH#1063)
      - Passive transfers failed unexpectedly due to use of SO_REUSEPORT socket
        option (GH#1171)
      - Implemented support for Redis 6.x AUTH semantics (GH#1070)
      - Fixed memory use-after-free issue in mod_sftp, which could cause unexpected
        login/authentication issues
      - Fixed SQL syntax regression for some generated SQL statements (GH#1149)
      - Fixed "Corrupted MAC on input" errors when SFTP uses the
        umac-64@openssh.com digest (GH#1111)