chore(deps): bump dnspython from 1.16.0 to 2.3.0 (#8931)

Bumps [dnspython](https://github.com/rthalley/dnspython) from 1.16.0 to 2.3.0.
- [Changelog](https://github.com/rthalley/dnspython/blob/master/doc/whatsnew.rst)
- [Commits](rthalley/dnspython@v1.16.0...v2.3.0)

---
updated-dependencies:
- dependency-name: dnspython
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

poetry.lock

@@ -142,7 +142,7 @@ marrow-mailer = {git = "https://github.com/LexMachinaInc/mailer.git", rev = "dev
 marrow-util = {git = "https://github.com/LexMachinaInc/util.git", rev = "develop"}
 jinja2 = "<3"
 markupsafe = "<2.1"
-dnspython = "<2"
+dnspython = "<3"
 
 [tool.poetry.group.dev.dependencies]
 nose = "1.3.7"