⬆️(backend) upgrade boto3 to 1.14.4 for unsigned urls

For media urls, we want to compute authorization as a header
instead of computing signed urls.

The url of a media file can then be computed without the
querystring authorization part. This requires upgrading
django-storages to the 1.14 version to benefit from the
"unsigned connection" in the S3Storage backend.

src/backend/pyproject.toml

@@ -34,7 +34,7 @@ dependencies = [
     "django-parler==2.3",
     "redis==5.0.8",
     "django-redis==5.4.0",
-    "django-storages[s3]==1.14.2",
+    "django-storages[s3]==1.14.4",
     "django-timezone-field>=5.1",
     "django==5.0.8",
     "djangorestframework==3.15.2",