chore: bump golang from 403f486 to 6dd5c5f in /.devcontainer (#1156)

Bumps golang from `403f486` to `6dd5c5f`.

---
updated-dependencies:
- dependency-name: golang
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.devcontainer/Dockerfile

@@ -2,7 +2,7 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
 #-------------------------------------------------------------------------------------------------------------
-FROM golang:1.20@sha256:403f48633fb5ebd49f9a2b6ad6719f912df23dae44974a0c9445be331e72ff5e
+FROM golang:1.20@sha256:6dd5c5f8936d7d4487802fb10a77f31b1776740be0fc17ada1acb74ac958f7be
 
 # Avoid warnings by switching to noninteractive
 ENV DEBIAN_FRONTEND=noninteractive