dev-go/sync: Update to version 0.5.0

Updates to version 0.5.0, required by go 1.22.3.

BUG=b/342019096
TEST=presubmit
RELEASE_NOTE=Updated dev-go/sync to v0.5.0.

Change-Id: I1b56b7a58a107d18cdfda076cb285a22516b6763
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/chromiumos-overlay/+/72316
Reviewed-by: Oleksandr Tymoshenko <ovt@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
4 files changed