Updated CHANGELOG

Signed-off-by: Raúl Naveiras <me@raulnaveiras.com>

CHANGELOG.md

@@ -32,6 +32,7 @@ We use *breaking* word for marking changes that are not backward compatible (rel
 
 ### Changed
 
+- [#2194](https://github.com/thanos-io/thanos/pull/2194) Updated to golang v1.14.0
 - [#1933](https://github.com/thanos-io/thanos/pull/1933) Add a flag `--tsdb.wal-compression` to configure whether to enable tsdb wal compression in ruler and receiver.
 - [#2021](https://github.com/thanos-io/thanos/pull/2021) Rename metric `thanos_query_duplicated_store_address` to `thanos_query_duplicated_store_addresses_total` and `thanos_rule_duplicated_query_address` to `thanos_rule_duplicated_query_addresses_total`.
 - [#2166](https://github.com/thanos-io/thanos/pull/2166) Improve tooltip for bucket web UI.