update CHANGELOG.md

jbardin · jbardin · commit 21d379f9a7c2 · 2021-12-01T12:26:16.000-05:00
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 # HCL Changelog
 
+## v2.11.1 (Dec 1, 2021)
+
+### Bugs Fixed
+
+* hclsyntax: The type for an upgraded unknown value with a splat expression cannot be known ([#495](https://github.com/hashicorp/hcl/pull/495))
+
+
 ## v2.11.0 (Dec 1, 2021)
 
 ### Enhancements
