Bump idna from 3.7 to 3.15

Bumps [idna](https://github.com/kjd/idna) from 3.7 to 3.15.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.md)
- [Commits](kjd/idna@v3.7...v3.15)

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

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

Author: dependabot[bot]

requirements.txt

@@ -13,7 +13,7 @@ decorator==4.4.1
 defusedxml==0.6.0
 en-core-web-md==2.2.5
 entrypoints==0.3
-idna==3.7
+idna==3.15
 imageio==2.6.1
 imbalanced-learn==0.6.2
 importlib-metadata==0.23