Revert change to use pycryptodome 3.15.0

It seems HA 2022.6 has another dependency on 3.14.1, so initialisation fails.
requirements.txt is OK, as that is only used for tests.

custom_components/tuya_local/manifest.json

@@ -7,6 +7,6 @@
     "issue_tracker": "https://github.com/make-all/tuya-local/issues",
     "dependencies": [],
     "codeowners": ["@make-all"],
-    "requirements": ["pycryptodome~=3.15.0","tinytuya~=1.6.1"],
+    "requirements": ["pycryptodome~=3.14.1","tinytuya~=1.6.1"],
     "config_flow": true
 }