build: bump Symbolics compat

Author: AayushSabharwal

Project.toml

@@ -147,7 +147,7 @@ StochasticDelayDiffEq = "1.8.1"
 StochasticDiffEq = "6.72.1"
 SymbolicIndexingInterface = "0.3.37"
 SymbolicUtils = "3.14"
-Symbolics = "6.29.1"
+Symbolics = "6.29.2"
 URIs = "1"
 UnPack = "0.1, 1.0"
 Unitful = "1.1"