GHA: Fix demo has empty version file

.github/workflows/demo.yml

@@ -26,10 +26,12 @@ jobs:
           fetch-tags: true
           ref: ${{ inputs.limboai-ref }}
 
+      - name: Init version
+        run: echo "LIMBOAI_VERSION=$( (git describe --tags --exact-match HEAD || git rev-parse --short HEAD) | sed 's/\(.*\)-\(.*\)/\1.\2/g' )" >> "$GITHUB_ENV"
+
       - name: Prepare artifact
         shell: bash
         run: |
-          echo "LIMBOAI_VERSION=$( (git describe --tags --exact-match HEAD || git rev-parse --short HEAD) | sed 's/\(.*\)-\(.*\)/\1.\2/g' )" >> "$GITHUB_ENV"
           cp {README,LICENSE}.md demo/
           mkdir -p demo/addons/limboai/
           cp -R icons/ demo/addons/limboai/icons