fix(deps): allow cachetools 5.0 for python 3.7+ (#937)

* fix(deps): allow cachetools 5.0 for python 3.7+

Changes listed https://github.com/tkem/cachetools/blob/master/CHANGELOG.rst#v500-2021-12-21

* chore: remove split pin

* Update setup.py

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setup.py

@@ -20,7 +20,7 @@
 
 
 DEPENDENCIES = (
-    "cachetools>=2.0.0,<5.0",
+    "cachetools>=2.0.0,<6.0",
     "pyasn1-modules>=0.2.1",
     # rsa==4.5 is the last version to support 2.7
     # https://github.com/sybrenstuvel/python-rsa/issues/152#issuecomment-643470233