ci: fix GitHub release creation for workflow_dispatch triggers

The softprops/action-gh-release action defaults to GITHUB_REF for the
tag, which only works on tag push events. On workflow_dispatch, there
is no tag ref, so the action fails with "GitHub Releases requires a
tag". Pass tag_name explicitly from the validated version output.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: jacderida

.github/workflows/release.yml

@@ -394,6 +394,7 @@ jobs:
       - name: Create GitHub Release
         uses: softprops/action-gh-release@v2
         with:
+          tag_name: ${{ needs.validate.outputs.version }}
           name: Autonomi Node ${{ needs.validate.outputs.version }}
           body: |
             ## Autonomi Node ${{ needs.validate.outputs.version }}