Last attempt at a different syntax

Author: Samuel-amap

.github/workflows/Benchmarks.yml

@@ -22,5 +22,6 @@ jobs:
     steps:
       - uses: MilesCranmer/AirspeedVelocity.jl@action-v1
         with:
-          julia-version: "1.9"
+          julia-version: 
+          - "1.9"
           bench-on: ${{ github.event.pull_request.head.sha }}