Update min compat on Manifolds

Author: Affie

Project.toml

@@ -56,8 +56,8 @@ FunctionalStateMachine = "0.2.9"
 JSON = "0.21"
 JSON2 = "0.3"
 KernelDensityEstimate = "0.5.6"
-Manifolds = "0.8.14"
-ManifoldsBase = "0.13"
+Manifolds = "0.8.15"
+ManifoldsBase = "0.13.12"
 MetaGraphs = "0.7"
 NLSolversBase = "7.6"
 NLsolve = "3, 4"