Bump dnspython from 2.2.1 to 2.6.1

Bumps [dnspython](https://github.com/rthalley/dnspython) from 2.2.1 to 2.6.1.
- [Release notes](https://github.com/rthalley/dnspython/releases)
- [Changelog](https://github.com/rthalley/dnspython/blob/main/doc/whatsnew.rst)
- [Commits](https://github.com/rthalley/dnspython/compare/v2.2.1...v2.6.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -6,7 +6,7 @@ cachetools==5.2.0
 captcha==0.5.0
 certifi==2023.7.22
 charset-normalizer==2.1.0
-dnspython==2.2.1
+dnspython==2.6.1
 google==3.0.0
 gpytranslate==1.5.1
 httpx