chore: update guts to latest, using mutations to prevent diffs (#17588)

Guts changes: https://github.com/coder/guts/compare/v1.1.0...main

scripts/apitypings/main.go

@@ -67,7 +67,12 @@ func main() {
 
 func TsMutations(ts *guts.Typescript) {
 	ts.ApplyMutations(
+		// TODO: Remove 'NotNullMaps'. This is hiding potential bugs
+		//   of referencing maps that are actually null.
+		config.NotNullMaps,
 		FixSerpentStruct,
+		// Prefer enums as types
+		config.EnumAsTypes,
 		// Enum list generator
 		config.EnumLists,
 		// Export all top level types