src/goToolsInformation: update hardcoded latest version of gopls for release

For #2341

Change-Id: I8907057995ba5af9f99510a373764beb8f31968d
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/417574
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: kokoro <noreply+kokoro@google.com>
Run-TryBot: Jamal Carvalho <jamal@golang.org>

Author: jamalc

src/goToolsInformation.ts

@@ -195,10 +195,10 @@ export const allToolsInformation: { [key: string]: Tool } = {
 		description: 'Language Server from Google',
 		usePrereleaseInPreviewMode: true,
 		minimumGoVersion: semver.coerce('1.13'),
-		latestVersion: semver.parse('v0.8.4'),
-		latestVersionTimestamp: moment('2022-05-13', 'YYYY-MM-DD'),
-		latestPrereleaseVersion: semver.parse('v0.8.4'),
-		latestPrereleaseVersionTimestamp: moment('2022-05-13', 'YYYY-MM-DD')
+		latestVersion: semver.parse('v0.9.1'),
+		latestVersionTimestamp: moment('2022-07-13', 'YYYY-MM-DD'),
+		latestPrereleaseVersion: semver.parse('v0.9.1'),
+		latestPrereleaseVersionTimestamp: moment('2022-07-13', 'YYYY-MM-DD')
 	},
 	'dlv': {
 		name: 'dlv',