Fix pytest-homeassistant-custom-component at 0.13.23

0.13.24 is giving lots of test failures due to hass.data not existing.
There doesn't seem to be any specific change advertised that you can no longer
access data directly like that, so may be a dependency update that has caused
it.

requirements-dev.txt

@@ -2,7 +2,7 @@ black
 fuzzywuzzy
 isort
 levenshtein
-pytest-homeassistant-custom-component>=0.12.52
+pytest-homeassistant-custom-component==0.13.23
 pytest
 pytest-asyncio
 pytest-cov