Bump zc-buildout from 3.0.1 to 3.1.0

Bumps [zc-buildout](http://buildout.org) from 3.0.1 to 3.1.0.

---
updated-dependencies:
- dependency-name: zc-buildout
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,3 +1,3 @@
 setuptools<70
-zc.buildout==3.0.1
+zc.buildout==3.1.0
 zope.interface==6.4.post2