[release] package.json: prepare v0.25.1

Change-Id: I2670c56369d7f2ec622109e75c059a8de31eba7c
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/321843
Trust: Hyang-Ah Hana Kim <[email protected]>
Run-TryBot: Hyang-Ah Hana Kim <[email protected]>
Reviewed-by: Suzy Mueller <[email protected]>
TryBot-Result: kokoro <[email protected]>

Author: hyangah

package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "go",
   "displayName": "Go",
-  "version": "0.25.0",
+  "version": "0.25.1",
   "publisher": "golang",
   "description": "Rich Go language support for Visual Studio Code",
   "author": {