Add yaml extension to .editorconfig (#14809)

Author: sobolevn

.editorconfig

@@ -1,12 +1,12 @@
 root = true
 
-[*.{py,pyi,c,cpp,h,rst,md,yml,json,test}]
+[*.{py,pyi,c,cpp,h,rst,md,yml,yaml,json,test}]
 trim_trailing_whitespace = true
 insert_final_newline = true
 indent_style = space
 
 [*.{py,pyi,c,h,json,test}]
 indent_size = 4
 
-[*.yml]
+[*.{yml,yaml}]
 indent_size = 2