upgraded black to the latest version and updated min python version to 3.8

Python 3.7 is not supported anymore and not supported by some packages

Author: martonilles

poetry.lock

@@ -20,7 +20,7 @@ classifiers = [
 "Bug Tracker" = "https://github.com/onekey-sec/python-client/issues"
 
 [tool.poetry.dependencies]
-python = "^3.7.0"
+python = "^3.8.0"
 httpx = "0.23.0"
 pydantic = "1.8.2"
 Authlib = "^0.15.3"
@@ -29,7 +29,7 @@ click = "^8.1.3"
 junit-xml = "^1.9"
 
 [tool.poetry.dev-dependencies]
-black = "^22.3.0"
+black = "^24.4.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]