Revert "Restrict access to release branch: release-R113 to LTS Refresher group."

This reverts commit 838b2673f3124f5ec51d98670ee23cd56dbfd9d0.

Reason for revert: refresh done

Change-Id: I257d0f8084f31711c990db59a920673df696bc78
Reviewed-on: https://cos-review.googlesource.com/c/All-Projects/+/77179
Tested-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Reviewed-by: Chenglong Tang <chenglongtang@google.com>