requirements[dev]: Remove python upper bound requirement.

Author: solomoncyj

setup.py

@@ -85,7 +85,7 @@ def long_description():
         "Issues": "https://github.com/zulip/zulip-terminal/issues",
         "Hot Keys": "https://github.com/zulip/zulip-terminal/blob/main/docs/hotkeys.md",
     },
-    python_requires=">=3.7, <3.12",
+    python_requires=">=3.7",
     keywords="",
     packages=find_packages(exclude=["tests", "tests.*"]),
     zip_safe=True,