fix julia version

Author: SebastianM-C

.github/workflows/CI.yml

@@ -45,7 +45,7 @@ jobs:
           - OptimizationPolyalgorithms
           - OptimizationNLPModels
         version:
-          - '1.1'
+          - '1.11'
           - 'lts'
     steps:
       - uses: actions/checkout@v4