CompatHelper: bump compat for Interpolations to 0.15, (keep existing compat)

Author: CompatHelper Julia

Project.toml

@@ -11,7 +11,7 @@ WCS = "15f3aee2-9e10-537f-b834-a6fb8bdb944d"
 
 [compat]
 FITSIO = "0.15, 0.16, 0.17"
-Interpolations = "0.13, 0.14"
+Interpolations = "0.13, 0.14, 0.15"
 SkyCoords = "0.4, 1"
 WCS = "0.5, 0.6"
 julia = "1.6"