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

This reverts commit 5707578ddbc3fae026e7f0aa95a82eabd4b52f26.

Reason for revert: M113 lts refresh is done

Change-Id: I1132ddb747adac737732f0ac2e9dd4fc60509e74
Reviewed-on: https://cos-review.googlesource.com/c/All-Projects/+/90264
Reviewed-by: Chenglong Tang <chenglongtang@google.com>
Tested-by: Nandhini Rengaraj <nrengaraj@google.com>