[release] Update CHANGELOG date for release

Change-Id: I98bf4dcb277254fe00ce636d8b6993e4f3058bb1
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/273188
Trust: Suzy Mueller <suzmue@golang.org>
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1225709..542227c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## v0.19.0 - 19 Nov, 2020
+## v0.19.0 - 25 Nov, 2020
 
 A list of all issues and changes can be found in the [v0.19.0 milestone](https://github.com/golang/vscode-go/milestone/14).