fix(amazonq): Release mynah-ui v 4.15.7 with a bug fix aws#5487

## Problem
New version of MynahUI requires release in vscode.

## Solution
Release new version of MynahUI with the following bug fix: [Nested list
parsing doesn't work in Mynah
UI](aws/mynah-ui#97).
MynahUI v4.15.7 release notes:
https://github.com/aws/mynah-ui/releases/tag/v4.15.7
The release fixes:
- markdown formatting in nested lists in response prompt
- code indentation in response prompt

Author: volodkevych

package-lock.json

@@ -0,0 +1,4 @@
+{
+	"type": "Bug Fix",
+	"description": "Fix bug with code indentation and nested list formatting in chat response prompt"
+}

packages/amazonq/.changes/next-release/Bug Fix-738aa5e7-6e07-4b9e-8c03-2ca25d60f7db.json

@@ -4111,7 +4111,7 @@
         "@aws-sdk/property-provider": "3.46.0",
         "@aws-sdk/smithy-client": "^3.46.0",
         "@aws-sdk/util-arn-parser": "^3.46.0",
-        "@aws/mynah-ui": "^4.15.6",
+        "@aws/mynah-ui": "^4.15.7",
         "@gerhobbelt/gitignore-parser": "^0.2.0-9",
         "@iarna/toml": "^2.2.5",
         "@smithy/middleware-retry": "^2.3.1",