build: bump Symbolics, SymbolicUtils compat

Author: AayushSabharwal

Project.toml

@@ -150,8 +150,8 @@ StaticArrays = "0.10, 0.11, 0.12, 1.0"
 StochasticDelayDiffEq = "1.8.1"
 StochasticDiffEq = "6.72.1"
 SymbolicIndexingInterface = "0.3.37"
-SymbolicUtils = "3.14"
-Symbolics = "6.29.2"
+SymbolicUtils = "3.25.1"
+Symbolics = "6.34"
 URIs = "1"
 UnPack = "0.1, 1.0"
 Unitful = "1.1"