Meson: Fix link of fuzzer tests

libicu is an internal dependency of libpsl, so if an executable
uses libicu directly, linking on libpsl is not enough, it must also
link on libicu.

Closes: #115

fuzz/meson.build

@@ -8,6 +8,8 @@ foreach test_name : ['fuzzer', 'load_fuzzer', 'load_dafsa_fuzzer']
   exe = executable(test_name, source_file, 'main.c',
     link_with : libpsl,
     c_args : fuzzer_cargs,
-    include_directories : [configinc, includedir])
+    include_directories : [configinc, includedir],
+    dependencies : libicu_dep,
+  )
   test(test_name, exe)
 endforeach

meson.build

@@ -101,4 +101,4 @@ subdir('include')
 subdir('src')
 subdir('tools')
 subdir('tests')
-#subdir('fuzz')
+subdir('fuzz')