Update engines.vscode to 1.59.0

Which is the latest update Azure Data Studio supports.

Author: andyleejordan

package-lock.json

@@ -6,7 +6,7 @@
   "publisher": "ms-vscode",
   "description": "(Preview) Develop PowerShell modules, commands and scripts in Visual Studio Code!",
   "engines": {
-    "vscode": "^1.56.0"
+    "vscode": "^1.59.0"
   },
   "license": "SEE LICENSE IN LICENSE.txt",
   "homepage": "https://github.com/PowerShell/vscode-powershell/blob/master/README.md",