Run Downgrade also on latest julia version

Author: fhagemann

.github/workflows/Downgrade.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        version: ['1.10']
+        version: ['1.10','1']
     steps:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2