[release-v0.44]extension/package.json: update version to 0.44.0

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

Change-Id: Ib4b4e2321dbbc6643f8f8eb2e06585129a5db825
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/634675
Commit-Queue: Gopher Robot <[email protected]>
kokoro-CI: kokoro <[email protected]>
Reviewed-by: Robert Findley <[email protected]>
Reviewed-by: Hyang-Ah Hana Kim <[email protected]>
Auto-Submit: Gopher Robot <[email protected]>

Author: gopherbot

extension/package-lock.json

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