Fixed Incorrect Pyproject Classifier (#185)

Author: kozlov721

pyproject.toml

@@ -10,7 +10,7 @@ keywords = ["ml", "ops", "camera", "luxonis", "oak"]
 dynamic = ["dependencies", "optional-dependencies", "version"]
 classifiers = [
   "License :: OSI Approved :: Apache Software License",
-  "Development Status :: 3 - Beta",
+  "Development Status :: 4 - Beta",
   "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",