Fix Julia version in integration test workflow to 1.11

Author: Nimrais

.github/workflows/IntegrationTest.yml

@@ -16,7 +16,7 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                julia-version: ['1']
+                julia-version: ['1.11']
                 os: [ubuntu-latest]
                 package:
                     # Add downstream packages that depend on ExponentialFamilyProjection here