Bump idna from 3.11 to 3.15

Bumps [idna](https://github.com/kjd/idna) from 3.11 to 3.15.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.md)
- [Commits](kjd/idna@v3.11...v3.15)

---
updated-dependencies:
- dependency-name: idna
  dependency-version: '3.15'
  dependency-type: indirect
...

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

Author: dependabot[bot]

requirements_mypy.txt

@@ -14,7 +14,7 @@ hatchling==1.27.0
     # via -r requirements_mypy.in
 hyperlink==21.0.0
     # via twisted
-idna==3.11
+idna==3.15
     # via hyperlink
 incremental==24.7.2
     # via twisted

requirements_tests.txt

@@ -54,7 +54,7 @@ hyperlink==21.0.0
     # via
     #   hatch
     #   twisted
-idna==3.11
+idna==3.15
     # via
     #   anyio
     #   httpx