fix(lambda): update change log (#8245)

## Problem
#8244

## Solution


---

- Treat all work as PUBLIC. Private `feature/x` branches will not be
squash-merged at release time.
- Your code changes must meet the guidelines in
[CONTRIBUTING.md](https://github.com/aws/aws-toolkit-vscode/blob/master/CONTRIBUTING.md#guidelines).
- License: I confirm that my contribution is made under the terms of the
Apache 2.0 license.

---------

Co-authored-by: tobixlea <[email protected]>

Author: Will-ShaoHua

packages/toolkit/.changes/next-release/Feature-4451ce39-42b1-4504-8fd7-3018ef0196e5.json

@@ -0,0 +1,4 @@
+{
+	"type": "Feature",
+	"description": "Lambda AppBuilder: Now you can install Finch from the AppBuilder walkthrough"
+}