Update CHANGELOG.md

Author: jfallows

CHANGELOG.md

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 # Changelog
 
+## [0.9.86](https://github.com/aklivity/zilla/tree/0.9.86) (2024-07-10)
+
+[Full Changelog](https://github.com/aklivity/zilla/compare/0.9.85...0.9.86)
+
+**Merged pull requests:**
+
+- Handle incremental key validation when length increases [\#1140](https://github.com/aklivity/zilla/pull/1140) ([akrambek](https://github.com/akrambek))
+
 ## [0.9.85](https://github.com/aklivity/zilla/tree/0.9.85) (2024-07-10)
 
 [Full Changelog](https://github.com/aklivity/zilla/compare/0.9.84...0.9.85)