CompatHelper: bump compat for Interpolations to 0.15, (keep existing compat) (#119)

Co-authored-by: CompatHelper Julia <[email protected]>

Author: github-actions[bot]

Project.toml

@@ -14,7 +14,7 @@ StatsBase = "2913bbd2-ae8a-5f71-8c99-4fb6c76f3a91"
 Distributions = "0.23, 0.24, 0.25"
 DocStringExtensions = "0.8, 0.9"
 FFTW = "1"
-Interpolations = "0.9, 0.10, 0.11, 0.12, 0.13, 0.14"
+Interpolations = "0.9, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15"
 StatsBase = "0.33, 0.34"
 julia = "1"