CompatHelper: bump compat for "Turing" to "0.16" for package turing (#258)

This pull request changes the compat entry for the `Turing` package from `0.15` to `0.15, 0.16` for package turing.

This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry. It is your responsibility to make sure that your package tests pass before you merge this pull request.

Author: github-actions[bot]

test/turing/Project.toml

@@ -6,5 +6,5 @@ Turing = "fce5fe82-541a-59a6-adf8-730c64b5f9a0"
 
 [compat]
 DynamicPPL = "0.11"
-Turing = "0.15"
+Turing = "0.15, 0.16"
 julia = "1.3"