ci/cd: fix create mattermost step variables

Author: levisingularity

.github/workflows/run-semver.yml

@@ -118,9 +118,9 @@ jobs:
         run: |
           title="${{ inputs.title }}"
           deliverable="${{ inputs.deliverable }}"
-          version="${{ needs.tag.outputs.version }}"
-          repository="${{ needs.tag.outputs.repository }}"
-          releaseNote="${{ needs.tag.outputs.release-note }}"
+          version=${{ needs.tag.outputs.version }}
+          repository=${{ needs.tag.outputs.repository }}
+          releaseNote=${{ needs.tag.outputs.release-note }}
 
           message="${title}\n\nDeliverable: ${deliverable}\nNew version available: ${version}\nRepository: https://github.com/${repository}/releases/tag/${version}"