fix(setup): correct python_requires section and bump min version to 3.10

Moved python_requires from [metadata] to [options] in setup.cfg to ensure it is included correctly in wheel metadata.

Updated minimum Python requirement from >=3.9 to >=3.10 since Python 3.9 has reached end-of-life.

Signed-off-by: Deeptanshu Sekhri deeptanshu.sekhri@arm.com