CompatHelper: bump compat for MPI to 0.20, (keep existing compat) (#183)

* CompatHelper: bump compat for MPI to 0.20, (keep existing compat)

* Update Project.toml

---------

Co-authored-by: CompatHelper Julia <compathelper_noreply@julialang.org>
Co-authored-by: Viral B. Shah <744411+ViralBShah@users.noreply.github.com>

Project.toml

@@ -1,7 +1,7 @@
 name = "PETSc"
 uuid = "ace2c81b-2b5f-4b1e-a30d-d662738edfe0"
 authors = ["Simon Byrne <simonbyrne@gmail.com>"]
-version = "0.1.3"
+version = "0.2.0"
 
 [deps]
 Libdl = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
@@ -11,9 +11,9 @@ PETSc_jll = "8fa3689e-f0b9-5420-9873-adf6ccf46f2d"
 SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 
 [compat]
-MPI = "0.15, 0.16, 0.17, 0.18, 0.19"
-PETSc_jll = "3.15.2"
-julia = "1.3"
+MPI = "0.20"
+PETSc_jll = "3.21"
+julia = "1.6"
 
 [extras]
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"