Merge pull request #1032 from SciML/compathelper/new_version/2024-08-12-00-36-50-895-02079161557

CompatHelper: bump compat for Symbolics to 6 for package StiffODE, (keep existing compat)

Author: ChrisRackauckas

benchmarks/StiffODE/Project.toml

@@ -41,5 +41,5 @@ ProfileSVG = "0.2"
 SciMLBenchmarks = "0.1"
 StaticArrays = "1"
 Sundials = "4.2"
-Symbolics = "5"
+Symbolics = "5, 6"
 TimerOutputs = "0.5"