tools: update midna

 bump django from 5.0.8 to 5.1 in /midna

Bumps [django](https://github.com/django/django) from 5.0.8 to 5.1.
- [Commits](django/django@5.0.8...5.1)

---
updated-dependencies:
- dependency-name: django
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

midna/src/requirements.txt

@@ -1,4 +1,4 @@
-django==5.0.8
+django==5.1
 mysqlclient==2.2.4
 bcrypt==4.2.0
 boto3==1.34.153