CompatHelper: bump compat for "MappedArrays" to "0.4" (#161)

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

Author: github-actions[bot]

Project.toml

@@ -18,7 +18,7 @@ AbstractFFTs = "0.4, 0.5, 1.0"
 Colors = "0.9, 0.10, 0.11, 0.12"
 FixedPointNumbers = "0.6.1, 0.7, 0.8"
 Graphics = "0.4, 1.0"
-MappedArrays = "0.2, 0.3"
+MappedArrays = "0.2, 0.3, 0.4"
 MosaicViews = "0.2.3"
 OffsetArrays = "0.8, 0.9, 0.10, 0.11, 1.0.1"
 PaddedViews = "0.5.4"