[ci] fix GH release version tag (#3596)

Author: SylvainJuge

.github/workflows/release.yml

@@ -266,7 +266,7 @@ jobs:
  env:
  GH_TOKEN: ${{ github.token }}
  run: |
- gh release create ${{ env.RELEASE_VERSION }} \
+ gh release create ${{ env.RELEASE_VERSION_TAG }} \
  --title="Release ${{ env.RELEASE_VERSION }}" \
  --notes="[Release Notes for ${{ env.RELEASE_VERSION }}](https://www.elastic.co/guide/en/apm/agent/java/current/release-notes-${{ steps.get_dotx_branch.outputs.dotx_branch }}.html#release-notes-${{ env.RELEASE_VERSION }})
  ${{ needs.publish-aws-lambda.outputs.arn_content }}"