Bump py from 1.4.31 to 1.10.0

Bumps [py](https://github.com/pytest-dev/py) from 1.4.31 to 1.10.0.
- [Release notes](https://github.com/pytest-dev/py/releases)
- [Changelog](https://github.com/pytest-dev/py/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/py@1.4.31...1.10.0)

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -8,7 +8,7 @@ pexpect==4.2.0
 pickleshare==0.7.3
 prompt-toolkit==1.0.5
 ptyprocess==0.5.1
-py==1.4.31
+py==1.10.0
 Pygments==2.1.3
 pytest==3.0.0
 pytest-cov==2.3.1