Increase SCIP time limit in test to fix flaky CI (fixes PyPSA#577) (PyPSA#606)

Author: FabianHofmann

test/test_optimization.py

@@ -530,7 +530,7 @@ def test_solver_time_limit_options(
         "cplex": {"timelimit": 1},
         "xpress": {"maxtime": 1},
         "highs": {"time_limit": 1},
-        "scip": {"limits/time": 1},
+        "scip": {"limits/time": 10},  # increase time limit to avoid race condition
         "mosek": {"MSK_DPAR_OPTIMIZER_MAX_TIME": 1},
         "mindopt": {"MaxTime": 1},
         "copt": {"TimeLimit": 1},