Merge pull request #1004 from SciML/compathelper/new_version/2025-04-27-00-26-53-708-04036298782

CompatHelper: add new compat entry for OrdinaryDiffEq at version 6 for package docs, (keep existing compat)

Author: ChrisRackauckas

docs/Project.toml

@@ -9,5 +9,6 @@ StochasticDiffEq = "789caeaf-c7a9-5a7d-9973-96adeb23e2a0"
 [compat]
 Documenter = "1"
 ModelingToolkit = "8.35, 9"
+OrdinaryDiffEq = "6"
 Plots = "1"
 SciMLBase = "1.74, 2"