Update VS Code settings to match latest value from IDE plugin (#1677)

## Changes
This updates the `python.envFile` property from VS Code's settings file
to use the value that is set by the latest version of the IDE plugin.
This change will make it a bit easier for contributors who work on the
CLI code base with the plugin enabled.

.vscode/settings.json

@@ -6,7 +6,7 @@
     "files.trimTrailingWhitespace": true,
     "files.insertFinalNewline": true,
     "files.trimFinalNewlines": true,
-    "python.envFile": "${workspaceFolder}/.databricks/.databricks.env",
+    "python.envFile": "${workspaceRoot}/.env",
     "databricks.python.envFile": "${workspaceFolder}/.env",
     "python.analysis.stubPath": ".vscode",
     "jupyter.interactiveWindow.cellMarker.codeRegex": "^# COMMAND ----------|^# Databricks notebook source|^(#\\s*%%|#\\s*\\<codecell\\>|#\\s*In\\[\\d*?\\]|#\\s*In\\[ \\])",