CompatHelper: bump compat for ITensorMPS to 0.4 for package test, (keep existing compat) (#348)

This pull request changes the compat entry for the `ITensorMPS` package
from `0.3.6` to `0.3.6, 0.4` for package test.
This keeps the compat entries for earlier versions.



Note: I have not tested your package with this new compat entry.
It is your responsibility to make sure that your package tests pass
before you merge this pull request.

---------

Co-authored-by: CompatHelper Julia <compathelper_noreply@julialang.org>
Co-authored-by: Matthew Fishman <mtfishman@users.noreply.github.com>

Author: 3 people

Project.toml

@@ -1,6 +1,6 @@
 name = "ITensorNetworks"
 uuid = "2919e153-833c-4bdc-8836-1ea460a35fc7"
-version = "0.19.5"
+version = "0.19.6"
 authors = ["Matthew Fishman <mfishman@flatironinstitute.org>, Joseph Tindall <jtindall@flatironinstitute.org> and contributors"]
 
 [workspace]

test/Project.toml

@@ -45,7 +45,7 @@ Distributions = "0.25.118"
 Glob = "1.3.1"
 Graphs = "1.12"
 GraphsFlows = "0.1.1"
-ITensorMPS = "0.3.6"
+ITensorMPS = "0.3.6, 0.4"
 ITensorNetworks = "0.19"
 ITensorPkgSkeleton = "0.3.42"
 ITensors = "0.7, 0.8, 0.9"