Update libclamav.map with missing symbols

[neiwilso]

Linker errors when supplying local unrar interface

[2024-01-25T17:38:36.469Z] : && g++   clamshell/clamshell_unpriv/CMakeFiles/clamshell-bin.dir/main.cpp.o clamshell/clamshell_unpriv/CMakeFiles/clamshell-bin.dir/crash_handler_crashpad.cpp.o -o clamshell/clamshell_unpriv/clamshell -L/home/jenkins/workspace/Cloud_ampcx_PR-7032/ampcx/build/debug/export/lib -Wl,-rpath,/home/jenkins/workspace/Cloud_ampcx_PR-7032/ampcx/build/debug/export/lib::::::::  src/libclamshell_unpriv.a  -lclamav  -lclamunrar_iface  -lclamunrar  -lclammspack  -Wl,-Bstatic  -lpcre2-8  -lssl  -lcrypto  -lxml2  -Wl,-Bdynamic  -lcrashpad_handler_lib  -lcrashpad_client  -lcrashpad_common  -lcrashpad_minidump  -lcrashpad_snapshot  -lcrashpad_common  -lcrashpad_context  -lcrashpad_net  -lcrashpad_util  -lcrashpad_base  -lz  -lrt  -lpthread  -lm  -ldl  -lbz2  -lstdc++  -lcrashpad_minidump  -lcrashpad_snapshot  -lcrashpad_context  -lcrashpad_net  -lcrashpad_util  -lcrashpad_base  -lz  -lrt  -lpthread  -lm  -ldl  -lbz2  -lstdc++ && :

[2024-01-25T17:38:36.469Z] /usr/bin/ld: src/libclamshell_unpriv.a(clamshell_unrar.c.o): in function `cs_unrar_enable':
[2024-01-25T17:38:36.469Z] clamshell_unrar.c:(.text+0x7): undefined reference to `cli_unrar_open'
[2024-01-25T17:38:36.469Z] /usr/bin/ld: clamshell_unrar.c:(.text+0x18): undefined reference to `cli_unrar_peek_file_header'
[2024-01-25T17:38:36.469Z] /usr/bin/ld: clamshell_unrar.c:(.text+0x29): undefined reference to `cli_unrar_extract_file'
[2024-01-25T17:38:36.469Z] /usr/bin/ld: clamshell_unrar.c:(.text+0x3a): undefined reference to `cli_unrar_skip_file'
[2024-01-25T17:38:36.469Z] /usr/bin/ld: clamshell_unrar.c:(.text+0x4b): undefined reference to `cli_unrar_close'

[micahsnyder]

These changes make sense to me. I will have to confirm they don't break anything weird in CI/CD.

Also, we're on our 2nd release candidate for 1.3.0. So we should probably hold off until after 1.3.0 ships and have this go towards 1.4.0.