fix in pipeline

.github/workflows/deploy-docker-to-tst.yml

@@ -26,7 +26,7 @@ jobs:
           path: version.txt
       - name: Notify Mattermost via Bot
         env:
-          VERSION: ${{ VERSION }}
+          VERSION: ${{ env.VERSION }}
           REPO: ${{ gitea.repository }}
           BRANCH: ${{ gitea.ref }}
           MATTERMOST_BOT_TOKEN: ${{ secrets.MATTERMOST_BOT_TOKEN }}
@@ -101,7 +101,7 @@ jobs:
 
       - name: Notify Mattermost via Bot
         env:
-          VERSION: ${{ VERSION }}
+          VERSION: ${{ env.VERSION }}
         run: |
           curl --fail -X POST -H "Authorization: Bearer tspcwdn5rbdk8kkmnex6h1nfha" \
           -H 'Content-Type: application/json' \