[Backport M70] update changelog (#7184)

## Test plan
update changelog
<!-- Required. See
https://docs-legacy.sourcegraph.com/dev/background-information/testing_principles.
-->

vscode/CHANGELOG.md

@@ -7,6 +7,18 @@ This is a log of all notable changes to Cody for VS Code.
 ## 1.70.1
 
 ### Fix
+## 1.70.2
+
+### Fix
+
+#### Chat
+
+- prompt caching feature flag enrollement [#7177](https://github.com/sourcegraph/cody/pull/7177)
+
+## 1.70.1
+
+### Fix
+
 - [Backport M70] fix(agentic chat): terminal and openCtx are not registered as tools [#7132](https://github.com/sourcegraph/cody/pull/7132)
 
 ## 1.70.0

vscode/package.json

@@ -3,7 +3,7 @@
   "name": "cody-ai",
   "private": true,
   "displayName": "Cody: AI Code Assistant",
-  "version": "1.70.1",
+  "version": "1.70.2",
   "publisher": "sourcegraph",
   "license": "Apache-2.0",
   "icon": "resources/sourcegraph.png",