Using latest version of petsc in the v3 series

Author: fverdugo

Project.toml

@@ -15,7 +15,7 @@ SparseMatricesCSR = "a0a7dd2c-ebf4-11e9-1f05-cf50bc540ca1"
 
 [compat]
 MPI = "0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.20"
-PETSc_jll = "=3.13.4, =3.15.2"
+PETSc_jll = "3"
 PartitionedArrays = "0.4"
 Preferences = "1"
 SparseArrays = "1"