CompatHelper: bump compat for Bijectors to 0.15 for package test, (keep existing compat)

Author: CompatHelper Julia

test/Project.toml

@@ -31,7 +31,7 @@ ADTypes = "1"
 AbstractMCMC = "5"
 AbstractPPL = "0.8.4, 0.9"
 Accessors = "0.1"
-Bijectors = "0.13.9, 0.14"
+Bijectors = "0.13.9, 0.14, 0.15"
 Combinatorics = "1"
 Compat = "4.3.0"
 Distributions = "0.25"