CompatHelper: bump compat for DomainSets to 0.6, (keep existing compat) (#159)

Co-authored-by: CompatHelper Julia <compathelper_noreply@julialang.org>

Author: github-actions[bot]

Project.toml

@@ -25,7 +25,7 @@ Aqua = "0.5"
 BandedMatrices = "0.16, 0.17"
 BlockArrays = "0.14, 0.15, 0.16"
 BlockBandedMatrices = "0.10, 0.11"
-DomainSets = "0.5"
+DomainSets = "0.5, 0.6"
 FastGaussQuadrature = "0.4, 0.5"
 FastTransforms = "0.12, 0.13, 0.14"
 FillArrays = "0.11, 0.12, 0.13"