Update editorconfig

Assume indent of 2 except in .py and Makefile files

Author: adamchainz

.editorconfig

@@ -4,14 +4,14 @@ root = true
 
 [*]
 indent_style = space
-indent_size = 4
+indent_size = 2
 trim_trailing_whitespace = true
 insert_final_newline = true
 charset = utf-8
 end_of_line = lf
 
-[*.{css,html,js,yaml,yml}]
-indent_size = 2
+[*.py]
+indent_size = 4
 
 [Makefile]
 indent_style = tab