chore: remove dependency on py (intel#3235)

* chore: remove dependency on py

py used to be a dependency of pytest, and we had it explicitly added to our
requirements file as a workaround to avoid an older vulnerable version.  As of
pytest 7.2.0 this dependency is no longer required.

Signed-off-by: Terri Oda <terri.oda@intel.com>

dev-requirements.txt

@@ -8,8 +8,7 @@ flake8==6.1.0; python_version >= "3.8"
 bandit==1.7.5
 gitlint==v0.19.1
 mypy==v1.4.1
-py>=1.10.0
-pytest
+pytest>=7.2.0
 pytest-xdist
 pytest-cov
 pytest-asyncio