api: add missing tests dependency for BSDs after e2bf7b2

test/misc/safe-list-test.cpp:2:10: fatal error: 'doctest/doctest.h' file not found
 #include <doctest/doctest.h>
          ^~~~~~~~~~~~~~~~~~~

Author: jbeich

test/misc/meson.build

@@ -9,5 +9,6 @@ safe_list = executable(
     'safe_list',
     'safe-list-test.cpp',
     include_directories: wayfire_api_inc,
+    dependencies: doctest,
     install: false)
 test('Safe list test', safe_list)