CompatHelper: add new compat entry for "Interpolations" at version "0.13" (#33)

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

Author: github-actions[bot]

Project.toml

@@ -9,6 +9,7 @@ LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 Logging = "56ddb016-857b-54e1-b83d-db4d58db5568"
 
 [compat]
+Interpolations = "0.13"
 julia = "0.7, 1"
 
 [extras]