Bump pyparsing from 2.4.6 to 2.4.7

Bumps [pyparsing](https://github.com/pyparsing/pyparsing) from 2.4.6 to 2.4.7.
- [Release notes](https://github.com/pyparsing/pyparsing/releases)
- [Changelog](https://github.com/pyparsing/pyparsing/blob/master/CHANGES)
- [Commits](pyparsing/pyparsing@pyparsing_2.4.6...pyparsing_2.4.7)

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

requirements.txt

@@ -45,7 +45,7 @@ pycodestyle==2.6.0
     # via flake8
 pyflakes==2.2.0
     # via flake8
-pyparsing==2.4.6
+pyparsing==2.4.7
     # via packaging
 pytest-cov==2.9.0
     # via -r requirements.in