Bug#1109758: biboumi: Disable TLS to get rid of botan v2

[Bastian Germann]

Source: biboumi
Version: 9.0+20241124-1
Severity: normal
Control: block 1109756 by -1

Please replace Build-Depends: libbotan-2-dev with libgcrypt20-dev so
that botan (EOL) can be removed from the archive.