Update CHANGELOG.md (#2853)

* Update CHANGELOG.md

* docs: add date to pending release in CHANGELOG.md

* docs: update release date.

Author: karel-rehor

CHANGELOG.md

@@ -1,11 +1,12 @@
 CHANGELOG for Kapacitor master commit 71a5e1e036b81a2f4cd4de56fdf298090d0ee13a
 
-## v1.7.7 [unreleased]
+## v1.7.7 [2025-05-27]
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 ### Other
 
-1. [2850](https://github.com/influxdata/kapacitor/pull/2850) - Python2 UDFs Deprecated - Support for Python 2-based UDFs is deprecated as of Kapacitor 1.7.7 and will be removed in Kapacitor 1.8.0. Please update your UDFs to be Python 3-compatible before upgrading. This change is part of our effort to follow modern security best practices.
+1. [2850](https://github.com/influxdata/kapacitor/pull/2850): Python2 UDFs Deprecated - Support for Python 2-based UDFs is deprecated as of Kapacitor 1.7.7 and will be removed in Kapacitor 1.8.0. Please update your UDFs to be Python 3-compatible before upgrading. This change is part of our effort to follow modern security best practices.
+2. [2852](https://github.com/influxdata/kapacitor/pull/2852): Upgrade Go to 1.22.12
 
 ## v1.7.6 [2024-10-28]
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