fix: readme - compatibility plugin version (#23)

Author: mfiedorowicz

README.md

@@ -15,7 +15,7 @@ at [https://netboxlabs.com/blog/introducing-diode-streamlining-data-ingestion-in
 | NetBox Version | Plugin Version |
 |:--------------:|:--------------:|
 |    >= 3.7.2    |     0.1.0      |
-|    >= 4.1.0    |     0.3.0      |
+|    >= 4.1.0    |     0.4.0      |
 
 ## Installation