infra: add v2.8.0 NCS release tag to the workflows

Due to this a new ncs image with v2.8.0 toolchain will be created.

.github/workflows/build-and-publish-ncs-zephyr.yaml

@@ -30,6 +30,7 @@ jobs:
           - ncs_version: "v2.5.3"
           - ncs_version: "v2.6.1"
           - ncs_version: "v2.7.0"
+          - ncs_version: "v2.8.0"
 
     steps:
       - name: Checkout repository

CHANGELOG.md

@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## [Unreleased]
 
+This is a no-change release, it is only needed so that image with NCS v2.8.0 can be published.
+
 ## [1.8.0] - 2024-11-07
 
 ### Added
@@ -105,4 +107,5 @@ All below changes are related to the ncs-zephyr Docker image:
 [1.2.0]: https://github.com/IRNAS/irnas-docker-software/compare/v1.1.0...v1.2.0
 [1.1.0]: https://github.com/IRNAS/irnas-docker-software/compare/v1.0.1...v1.1.0
 [1.0.1]: https://github.com/IRNAS/irnas-docker-software/compare/v1.0.0...v1.0.1
-[1.0.0]: https://github.com/IRNAS/irnas-docker-software/compare/b08044e0137bcbbf5f060545de6b2d2a9f1ee8d8...v1.0.0
+[1.0.0]:
+  https://github.com/IRNAS/irnas-docker-software/compare/b08044e0137bcbbf5f060545de6b2d2a9f1ee8d8...v1.0.0