Bump dnspython from 2.7.0 to 2.8.0 (#28)

Bumps [dnspython](https://github.com/rthalley/dnspython) from 2.7.0 to 2.8.0.
- [Release notes](https://github.com/rthalley/dnspython/releases)
- [Changelog](https://github.com/rthalley/dnspython/blob/main/doc/whatsnew.rst)
- [Commits](rthalley/dnspython@v2.7.0...v2.8.0)

---
updated-dependencies:
- dependency-name: dnspython
  dependency-version: 2.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,4 +1,4 @@
-dnspython==2.7.0
+dnspython==2.8.0
 requests==2.32.5
 six==1.17.0
 testresources==2.0.2