Bump django-bootstrap5 from 25.3 to 26.1 (#1987)

Author: dependabot[bot]

pyproject.toml

@@ -19,7 +19,7 @@ dependencies = [
     "commonmark==0.9.1",
     "conference-scheduler==3.0.1",
     "django-allauth[mfa]==65.14.0",
-    "django-bootstrap5==25.3",
+    "django-bootstrap5==26.1",
     "django-colorfield==0.14.0",
     "django-cors-headers==4.9.0",
     "django-filter==25.2",