ci: python3-minimal is insufficient

Change-Id: I5f09ad2dabee72fd5187ffa028431c6346988598
diff --git a/.editorconfig b/.editorconfig
index 624ad9b..f9b3c4d 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -26,3 +26,4 @@
 [*.{yaml,yml}]
 indent_style = space
 indent_size = 2
+trim_trailing_whitespace = true