🏷️ chore: drop Python 3.9 classifier

Remove the Python 3.9 package classifier because the SDK requires Python 3.10 or newer.

Author: YashGaykar0309

pyproject.toml

@@ -10,7 +10,6 @@ requires-python = ">=3.10"
 license = { text = "BSD" }
 keywords = []
 classifiers = [
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",