Bump django from 5.0.7 to 5.1.1

Bumps [django](https://github.com/django/django) from 5.0.7 to 5.1.1.
- [Commits](django/django@5.0.7...5.1.1)

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

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

requirements.txt

@@ -108,9 +108,9 @@ dj-database-url==2.2.0 \
     --hash=sha256:3e792567b0aa9a4884860af05fe2aa4968071ad351e033b6db632f97ac6db9de \
     --hash=sha256:9f9b05058ddf888f1e6f840048b8d705ff9395e3b52a07165daa3d8b9360551b
     # via symfexit (pyproject.toml)
-django==5.0.7 \
-    --hash=sha256:bd4505cae0b9bd642313e8fb71810893df5dc2ffcacaa67a33af2d5cd61888f2 \
-    --hash=sha256:f216510ace3de5de01329463a315a629f33480e893a9024fc93d8c32c22913da
+django==5.1.1 \
+    --hash=sha256:021ffb7fdab3d2d388bc8c7c2434eb9c1f6f4d09e6119010bbb1694dda286bc2 \
+    --hash=sha256:71603f27dac22a6533fb38d83072eea9ddb4017fead6f67f2562a40402d61c3f
     # via
     #   dj-database-url
     #   django-picklefield