Add upcoming django CMS version (#198)

Co-authored-by: Dustin Ingram <[email protected]>

Author: fsbraun

src/trove_classifiers/__init__.py

@@ -141,6 +141,7 @@
     "Framework :: Django CMS :: 3.11",
     "Framework :: Django CMS :: 4.0",
     "Framework :: Django CMS :: 4.1",
+    "Framework :: Django CMS :: 4.2",
     "Framework :: FastAPI",
     "Framework :: Flake8",
     "Framework :: Flask",