Bump django-s3sign from 0.5.0 to 0.5.1

Bumps [django-s3sign](https://github.com/ccnmtl/django-s3sign) from 0.5.0 to 0.5.1.
- [Release notes](https://github.com/ccnmtl/django-s3sign/releases)
- [Changelog](https://github.com/ccnmtl/django-s3sign/blob/master/CHANGES)
- [Commits](ccnmtl/django-s3sign@0.5.0...0.5.1)

---
updated-dependencies:
- dependency-name: django-s3sign
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -106,7 +106,7 @@ entrypoints==0.4
 typing_extensions==4.12.2
 pyparsing==3.1.4
 
-django-s3sign==0.5.0
+django-s3sign==0.5.1
 django-cors-headers==4.4.0
 django-treebeard==4.7.1