Bump wheel from 0.32.1 to 0.38.1

Bumps [wheel](https://github.com/pypa/wheel) from 0.32.1 to 0.38.1.
- [Release notes](https://github.com/pypa/wheel/releases)
- [Changelog](https://github.com/pypa/wheel/blob/main/docs/news.rst)
- [Commits](pypa/wheel@0.32.1...0.38.1)

---
updated-dependencies:
- dependency-name: wheel
  dependency-type: direct:development
...

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

requirements_dev.txt

@@ -1,6 +1,6 @@
 pip==18.1
 bumpversion==0.5.3
-wheel==0.32.1
+wheel==0.38.1
 watchdog==0.9.0
 flake8==3.5.0
 tox==3.5.2