fix: Release requirements fix (#419)

* chore: Drop py36 from changelog

* fix: tox dependency < 4.0

* fix: adds api_compatibility_tests for 4.2.0

* fix: add the missing release_requirements.txt

* fix: add deps from other commands

---------

Co-authored-by: Shubham Chaturvedi <scchatur@amazon.com>

dev_requirements/release-requirements.txt

@@ -0,0 +1,4 @@
+pypi-parker
+setuptools
+wheel
+twine