Bump click lower bound to >=8.4 and drop upper bound (#1040)

Co-authored-by: Marcelo Trylesinski <marcelotryle@gmail.com>

Author: drusc0

src/httpx2/pyproject.toml

@@ -57,7 +57,7 @@ brotli = [
     "brotlicffi; platform_python_implementation != 'CPython'",
 ]
 cli = [
-    "click==8.*",
+    "click>=8.4",
     "pygments==2.*",
     "rich>=10,<16",
 ]