Adding Overstock to the USERS.md
Adding Overstock to the USERS.md

Signed-off-by: Nate Taylor <b677a0be390a44a654c995f8f9fa90df2da705e2@gmail.com>

michi-covalent/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium,michi-covalent/cilium,michi-covalent/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium