Update classifier in setup.py

[kit494way]

The dependent package jmespath-community supports Python 3.7 or higher.
Because Python 3.7 will be EOL at 2023-06-27, it may be better to specify 3.8 and above.
At least 2.6, 2.7 and 3.3 can be dropped.

jmespath.terminal/setup.py

Lines 25 to 34 in 7c0999d

	classifiers=(
	'Development Status :: 5 - Production/Stable',
	'Intended Audience :: Developers',
	'Natural Language :: English',
	'License :: OSI Approved :: Apache Software License',
	'Programming Language :: Python',
	'Programming Language :: Python :: 2.6',
	'Programming Language :: Python :: 2.7',
	'Programming Language :: Python :: 3',
	'Programming Language :: Python :: 3.3',