docs(README): Adjust TODOs

README.md

@@ -48,6 +48,7 @@ This toolchain is still under development. Before it will be used in production
 - [x] Centralised logging (using loki/greylog/ELK/…)
 - [x] Add secure runtime class (gVisor/kata-container/…) for exposed containers
 - [x] Move to immutable base-system
-- [ ] Harden egress networkpolicies keycloak, forecastle, matrix
-- [ ] Set Priority classes for workloads
+- [ ] Set Priority classes for workloads (on namespace level it's done, but helm releases still need adjustment)
+- [ ] Harden egress NetworkPolicies keycloak, forecastle, matrix
+- [ ] Backup essential volumes using `mc` and client-side encryption and Object Locks