[PartitionedSolvers] add julia to [compat] entry

Author: fverdugo

PartitionedSolvers/Project.toml

@@ -15,7 +15,7 @@ SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 IterativeSolvers = "0.9"
 PartitionedArrays = "0.4.4"
 SparseArrays = "1"
-
+julia = "1.6"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"