extension/package.json: update version to 0.46.0-dev

This is an automated CL which updates the package.json and package-lock.json.

Change-Id: If4a1014cb1b8a9d7dbf2c3c1c701a6e143b20e31
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/636457
Auto-Submit: Gopher Robot <[email protected]>
Commit-Queue: Gopher Robot <[email protected]>
Reviewed-by: Hyang-Ah Hana Kim <[email protected]>
Reviewed-by: Robert Findley <[email protected]>
kokoro-CI: kokoro <[email protected]>

Author: gopherbot

extension/package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "go",
   "displayName": "Go",
-  "version": "0.44.0-dev",
+  "version": "0.46.0-dev",
   "publisher": "golang",
   "description": "Rich Go language support for Visual Studio Code",
   "author": {