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

Author: CompatHelper Julia

Project.toml

@@ -47,7 +47,7 @@ AbstractMCMC = "5"
 AbstractPPL = "0.8.4, 0.9"
 Accessors = "0.1"
 BangBang = "0.4.1"
-Bijectors = "0.13.18, 0.14"
+Bijectors = "0.13.18, 0.14, 0.15"
 ChainRulesCore = "1"
 Compat = "4"
 ConstructionBase = "1.5.4"