Fix workflow

Author: maltejur

.github/workflows/publish.yaml

@@ -20,8 +20,8 @@ jobs:
         run: echo ::set-output name=modified::$([ -z "`git status --porcelain`" ] && echo "false" || echo "true")
       - name: Save new version number
         id: save-version
-        run: echo "::set-output name=ver-number::" && cat devicon-latest.txt
-      - run: echo ${{steps.git-check.outputs.modified}} && echo " -- " && echo ${{steps.save-version.outputs.ver-number}}
+        run: echo ::set-output name=ver-number::$(cat cat devicon-latest.txt)
+      - run: echo ${{steps.git-check.outputs.modified}} && echo ${{steps.save-version.outputs.ver-number}}
   release:
     needs: check_version
     if: needs.jobs.outputs.is_new_version == 'true'