Bump waitress from 2.1.1 to 2.1.2

Bumps [waitress](https://github.com/Pylons/waitress) from 2.1.1 to 2.1.2.
- [Release notes](https://github.com/Pylons/waitress/releases)
- [Changelog](https://github.com/Pylons/waitress/blob/v2.1.2/CHANGES.txt)
- [Commits](Pylons/waitress@v2.1.1...v2.1.2)

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

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

requirements-dev-base.txt

@@ -17,7 +17,7 @@ sphinxcontrib-httpdomain==1.8.0
 pygments==2.10.0
 
 # waitress
-waitress==2.1.1
+waitress==2.1.2
 
 # Linting
 flake8==4.0.1