Update default gems list at b62b7dc705 [ci skip]

NEWS.md

@@ -416,6 +416,9 @@ Note: We're only listing outstanding class updates.
     * syntax_suggest 1.0.1
     * timeout 0.3.1
     * tmpdir 0.1.3
+    * tsort 0.1.1
+    * un 0.2.1
+    * uri 0.12.0
 
 *   The following bundled gems are updated.