CompatHelper: bump compat for "IntervalSets" to "0.6" (#31)

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

Author: github-actions[bot]

Project.toml

@@ -20,7 +20,7 @@ DomainSets = "0.3, 0.4, 0.5"
 FFTW = "1.1"
 FastTransforms = "0.10, 0.11, 0.12, 0.13"
 InfiniteArrays = "0.5, 0.6, 0.7, 0.8, 0.9, 0.10, 0.11, 0.12"
-IntervalSets = "0.5"
+IntervalSets = "0.5, 0.6"
 Reexport = "0.2, 1"
 SpecialFunctions = "0.8, 0.9, 0.10, 1.0"
 julia = "1.3"