Update history to reflect merge of #493 [ci skip]

jekyllbot · jekyllbot · commit 574b17409021 · 2022-11-21T09:04:18.000-08:00
diff --git a/History.markdown b/History.markdown
@@ -7,6 +7,7 @@
 ### Development Fixes
 
   * Lock `rdoc` gem to v6.3.x to avoid Psych 4.0 (#491)
+  * Bump dependencies and CI Ruby versions (#493)
 
 ## 0.21.0 / 2021-10-31
 
