security/wolfssh: Fix build with wolfssl 5.9.2

/bin/sh ./libtool --tag=CC --mode=compile cc -DHAVE_CONFIG_H -I. -DBUILDING_WOLFSSH -DWOLFSSH_TEST_INTERNAL -DNDEBUG -DWOLFSSH_KEYGEN -DWOLFSSH_SCP -DWOLFSSH_SFTP -DWOLFSSH_FWD -DWOLFSSH_TERM -DWOLFSSH_SHELL -DWOLFSSH_AGENT -DWOLFSSH_CERTS -isystem /usr/local/include -fvisibility=hidden -O2 -pthread -O2 -pipe -fstack-protector-strong -isystem /usr/local/include -fno-strict-aliasing -Wno-pragmas -Wall -Wno-strict-aliasing -Wextra -Wunknown-pragmas --param=ssp-buffer-size=1 -Waddress -Warray-bounds -Wbad-function-cast -Wchar-subscripts -Wcomment -Wfloat-equal -Wformat-security -Wformat=2 -Wmissing-field-initializers -Wmissing-noreturn -Wmissing-prototypes -Wnested-externs -Woverride-init -Wpointer-arith -Wpointer-sign -Wredundant-decls -Wshadow -Wshorten-64-to-32 -Wsign-compare -Wstrict-overflow=1 -Wstrict-prototypes -Wswitch-enum -Wundef -Wunused -Wunused-result -Wunused-variable -Wwrite-strings -fwrapv -MT src/libwolfssh_test_la-internal.lo -MD -MP -MF src/.deps/libwolfssh_test_la-internal.Tpo -c -o src/libwolfssh_test_la-internal.lo test -f 'src/internal.c' || echo './'src/internal.c
libtool: compile: cc -DHAVE_CONFIG_H -I. -DBUILDING_WOLFSSH -DWOLFSSH_TEST_INTERNAL -DNDEBUG -DWOLFSSH_KEYGEN -DWOLFSSH_SCP -DWOLFSSH_SFTP -DWOLFSSH_FWD -DWOLFSSH_TERM -DWOLFSSH_SHELL -DWOLFSSH_AGENT -DWOLFSSH_CERTS -isystem /usr/local/include -fvisibility=hidden -O2 -pthread -O2 -pipe -fstack-protector-strong -isystem /usr/local/include -fno-strict-aliasing -Wno-pragmas -Wall -Wno-strict-aliasing -Wextra -Wunknown-pragmas --param=ssp-buffer-size=1 -Waddress -Warray-bounds -Wbad-function-cast -Wchar-subscripts -Wcomment -Wfloat-equal -Wformat-security -Wformat=2 -Wmissing-field-initializers -Wmissing-noreturn -Wmissing-prototypes -Wnested-externs -Woverride-init -Wpointer-arith -Wpointer-sign -Wredundant-decls -Wshadow -Wshorten-64-to-32 -Wsign-compare -Wstrict-overflow=1 -Wstrict-prototypes -Wswitch-enum -Wundef -Wunused -Wunused-result -Wunused-variable -Wwrite-strings -fwrapv -MT src/libwolfssh_test_la-internal.lo -MD -MP -MF src/.deps/libwolfssh_test_la-internal.Tpo -c src/internal.c -fPIC -DPIC -o src/.libs/libwolfssh_test_la-internal.o
src/internal.c:60:10: fatal error: 'wolfssl/wolfcrypt/mlkem.h' file not found

60 | #include <wolfssl/wolfcrypt/mlkem.h>
   |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~

1 error generated.

Reference: https://pkg-status.freebsd.org/beefy22/data/143amd64-default/932084179555/logs/wolfssh-1.5.0.log
Obtained from: https://github.com/wolfSSL/wolfssh/commit/73b10ad26d51309852e87e74cb4e6d27f2faf33b