slow tests to 1.6

Author: guyvdbroeck

.github/workflows/slow_tests.yml

@@ -26,7 +26,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@latest
         with:
-          version: 1.5
+          version: 1.6
 
       # Runs a single command using the runners shell
       - name: Unit Tests