conserver: update to version 8.2.7

conserver: update to version 8.2.7

version 8.2.7 (July 7, 2022):
        - configure.ac: autoconf-2.70 fix (Lars Wendler <redacted>)
        - Add high baud rates (Peter Chubb <redacted>)
        - Make compile --with-ipv6 & setproctitle (Bjoern A. Zeeb <redacted>)
        - conserver.cf: devicesubst add 'b' for baud rate (Bjoern A. Zeeb <redacted>)
        - Reflect that baud values have increased to 7 digits (Bjoern A. Zeeb <redacted>)
        - cirrus-ci: move to freebsd-13-0 (Bryan Stansell <redacted>)
        - configure.ac: support libgssapi_krb5 (Jiri Kastner <redacted>)

Drop upstreamed patch 000-100-backport-config-macro-fix.patch

Signed-off-by: Bjørn Mork <redacted>