upgrade respo again to fix defstyle checking

Author: tiye

deps.cirru

@@ -4,6 +4,6 @@
     |Respo/reel.calcit |main
     |Respo/respo-markdown.calcit |0.4.11
     |Respo/respo-ui.calcit |0.6.3
-    |Respo/respo.calcit |0.16.20
+    |Respo/respo.calcit |0.16.21
     |calcit-lang/lilac |main
     |calcit-lang/memof |main