tests: fix dependencies of sudachipy test

`sudachipy` test depends on availability of dictionary packages
(`sudachidict_small`, `sudachidict_core`, and `sudachidict_full`),
so skip the test if they are not available.

In practice, this means that we likely will not be running this
test on the pyup-bot PRs, unless both `sudachipy` and dictionary
packages get updated at the same time.

src/_pyinstaller_hooks_contrib/tests/test_libraries.py

@@ -1852,6 +1852,9 @@ def test_pymorphy3(pyi_builder):
 
 
 @importorskip('sudachipy')
+@importorskip('sudachidict_small')
+@importorskip('sudachidict_core')
+@importorskip('sudachidict_full')
 def test_sudachipy(pyi_builder):
     pyi_builder.test_source("""
         from sudachipy import Dictionary