CompatHelper: bump compat for "DomainSets" to "0.4" (#17)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

Project.toml

@@ -16,7 +16,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 [compat]
 AbstractFFTs = "0.5"
 ApproxFunBase = "0.3.4"
-DomainSets = "0.3"
+DomainSets = "0.3, 0.4"
 FFTW = "1.1"
 FastTransforms = "0.8, 0.9"
 InfiniteArrays = "0.5, 0.6, 0.7"