Update docs/release/releases/release-1.11.md

Co-authored-by: Fabrizio Pandini <[email protected]>

Author: mboersma

docs/release/releases/release-1.11.md

@@ -12,6 +12,7 @@ The following table shows the preliminary dates for the `v1.11` release cycle.
 | *v1.10.x released (tentative)*                        | Release Lead  | Tuesday 29th April 2025     | week 1   |
 | *v1.9.x & v1.10.x released*                           | Release Lead  | Tuesday 20th May 2025       | week 4   |
 | v1.11.0-alpha.0 released                              | Release Lead  | Tuesday 28th May 2025       | week 5   |
+| Communicate alpha to providers | Comms Mgr | Tuesday 28th May 2025       | week 5  |
 | *v1.9.x & v1.10.x released*                           | Release Lead  | Tuesday 17th June 2025      | week 8   |
 | v1.11.0-alpha.1 released (to be confirmed)                             | Release Lead  | Tuesday 17th June 2025      | week 8   |
 | v1.11.0-alpha.2 released  (to be confirmed)                             | Release Lead  | Tuesday 1st July 2025       | week 10  |