Add next responsible person for 1.28, 1.29 release (#481)

Added information about the person responsible for the 1.28, and 1.29
release.

Co-authored-by: Inessa Druzhkova <inessadruzkova@inessas-mbp.home>

doc/release/RELEASE-PROTOCOL.md

@@ -51,6 +51,8 @@ This document outlines the SDLC pillars of the opensupplyhub monorepo, as well a
 | v1.25.0 | November 30, 2024  | November 26, 2024 | @Oleksandr Mazur |
 | v1.26.0 | December 14, 2024  | December 10, 2024 | @Nessa Drew |
 | v1.27.0 | January 11, 2025  | January 7, 2025 | @Nessa Drew |
+| v1.28.0 | January 25, 2025  | January 21, 2025 | @Vlad Shapik |
+| v1.29.0 | February 8, 2025  | February 4, 2025 | @Vlad Shapik |
 
 ## General Information