Update Actions version

[newwingbird]

Proposal

I have found the actions of the older version.
If this issue is accepted, I will research and update it for items other than those listed below.

• Checkout's latest is v4
• Setup-Python's latest is v5
• Cache's latest is v4

databricks-sql-python/.github/workflows/code-quality-checks.yml

Lines 15 to 26 in 97c815e

	steps:
	#----------------------------------------------
	# check-out repo and set-up python
	#----------------------------------------------
	- name: Check out repository
	uses: actions/checkout@v2
	- name: Set up python ${{ matrix.python-version }}
	id: setup-python
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	#----------------------------------------------

Next Action

If there is no reason why you are using an older version, I would be happy to help you.

[kravets-levko]

Hi @newwingbird! We're using these versions because they work, and GitHub doesn't complain 🤷‍♂️ We usually do upgrade actions when older wersions become unsupported. But if you want to help with upgrade right now - you're welcome 👍