src/goTools: update dlv-dap latest version

Picking up 747f037

https://proxy.golang.org/github.com/go-delve/delve/@v/v1.6.1-0.20210414072240-747f03788315.info
{"Version":"v1.6.1-0.20210414072240-747f03788315","Time":"2021-04-14T07:22:40Z"}

Change-Id: Ibfe025e56510aac6bacc320541630b09e766f7f2
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/309850
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Suzy Mueller <suzmue@golang.org>

src/goTools.ts

diff --git a/src/goTools.ts b/src/goTools.ts
index 8fb4142..9cf93fb 100644
--- a/src/goTools.ts
+++ b/src/goTools.ts
@@ -450,8 +450,8 @@
 		description: 'Go debugger (Delve built for DAP experiment)',
 		defaultVersion: 'master', // Always build from the master.
 		minimumGoVersion: semver.coerce('1.14'), // last 3 versions per delve policy
-		latestVersion: semver.parse('v1.6.1-0.20210402163444-c223ef656da3'),
-		latestVersionTimestamp: moment('2021-04-02', 'YYYY-MM-DD')
+		latestVersion: semver.parse('1.6.1-0.20210414072240-747f03788315'),
+		latestVersionTimestamp: moment('2021-04-14', 'YYYY-MM-DD')
 	},
 	'fillstruct': {
 		name: 'fillstruct',