Bump dnspython from 1.16.0 to 2.6.1

Bumps [dnspython](https://github.com/rthalley/dnspython) from 1.16.0 to 2.6.1.
- [Release notes](https://github.com/rthalley/dnspython/releases)
- [Changelog](https://github.com/rthalley/dnspython/blob/main/doc/whatsnew.rst)
- [Commits](rthalley/dnspython@v1.16.0...v2.6.1)

---
updated-dependencies:
- dependency-name: dnspython
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -15,7 +15,7 @@ cryptography==42.0.0
 cycler==0.10.0
 distlib==0.3.0
 distro==1.4.0
-dnspython==1.16.0
+dnspython==2.6.1
 email-validator==1.0.5
 fastapi==0.109.1
 flatbuffers==1.12