Merge pull request #1401 from SciML/compathelper/new_version/2025-09-18-00-46-53-224-00547153713

CompatHelper: bump compat for Sundials to 5 for package StiffODE, (keep existing compat)

Author: ChrisRackauckas

benchmarks/StiffODE/Project.toml

@@ -42,6 +42,6 @@ ProfileSVG = "0.2"
 RecursiveFactorization = "0.2.23"
 SciMLBenchmarks = "0.1"
 StaticArrays = "1"
-Sundials = "4.2"
+Sundials = "4.2, 5"
 Symbolics = "5, 6"
 TimerOutputs = "0.5"