Drop Py < 3.7 & Don't use lru_cache

[s0undt3ch]

No description provided.

[codecov]

Codecov Report

Merging #23 (9961f0d) into main (7665312) will decrease coverage by 0.09%.
The diff coverage is 94.55%.

❗ Current head 9961f0d differs from pull request most recent head 67ec3a4. Consider uploading reports for the commit 67ec3a4 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #23      +/-   ##
==========================================
- Coverage   93.09%   93.00%   -0.08%     
==========================================
  Files          43       47       +4     
  Lines        1605     1856     +251     
==========================================
+ Hits         1494     1726     +232     
- Misses        111      130      +19     

Flag	Coverage Δ
	93.00% <94.55%> (?)
Linux	?
Py35	?
Py36	?
Py37	?
Py38	?
Py39	?
PyTest60	?
PyTest61	?
PyTest62	?
Windows	?
macOS	?
src	82.60% <89.06%> (-0.46%)	⬇️
tests	99.57% <100.00%> (-0.43%)	⬇️

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Impacted Files	Coverage Δ
src/pytestskipmarkers/__init__.py	100.00% <ø> (ø)
src/pytestskipmarkers/utils/socket.py	100.00% <ø> (ø)
tests/conftest.py	62.50% <ø> (-37.50%)	⬇️
tests/functional/test_destructive_test.py	100.00% <ø> (ø)
...nit/utils/markers/test_skip_if_binaries_missing.py	100.00% <ø> (ø)
...nit/utils/markers/test_skip_if_no_local_network.py	100.00% <ø> (ø)
tests/unit/utils/markers/test_skip_if_not_root.py	100.00% <ø> (ø)
tests/unit/utils/test_ports.py	100.00% <ø> (ø)
src/pytestskipmarkers/utils/win_functions.py	28.58% <53.85%> (+1.91%)	⬆️
src/pytestskipmarkers/plugin.py	94.12% <78.58%> (-5.88%)	⬇️
... and 39 more