chore(deps): bump idna in /rootfs in the pip group across 1 directory (#206)

Bumps the pip group with 1 update in the /rootfs directory: [idna](https://github.com/kjd/idna).


Updates `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: direct:production
  dependency-group: pip
...

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

Author: dependabot[bot]

rootfs/requirements.txt

@@ -10,7 +10,7 @@ docker==7.1.0
 gunicorn==23.0.0
 uvicorn[standard]==0.38.0
 asgiref==3.10.0
-idna==3.11
+idna==3.15
 jsonschema==4.25.1
 morph==0.1.5
 packaging==25.0