🏷️ Change tag of MEP0004 from 'Active' to 'Accepted'

Author: rowanc1

meps/mep-0004.md

@@ -8,7 +8,7 @@ authors:
   - agoose77
   - rowanc1
 tags:
-  - Active
+  - Accepted
 data:
   discussion: https://github.com/jupyter-book/mystmd/issues/1026
 ---