Bump downstream OrdinaryDiffEq/ModelingToolkit compat for RAT 4.x

RecursiveArrayTools 4.x is incompatible with all OrdinaryDiffEq 6.x
versions reachable under the current dep graph: Adapt 4 narrows
OrdinaryDiffEq to 6.64.0 - 6.111.0, and OrdinaryDiffEq 6.110+ pins
RecursiveArrayTools to 3.52.0 - 3, leaving an empty intersection. The
only working path is OrdinaryDiffEq 7, which in turn requires MTK 10+,
so bump both compat entries.

This unblocks `activate_downstream_env` (which fails at Pkg.develop on
master). Downstream test sources have separate, follow-on issues that
the resolver previously masked (OrdinaryDiffEq 7 `autodiff::Bool`
deprecation, `Rodas5`/`SciMLBase` no longer reexported from
OrdinaryDiffEq, MTK 11 `getindex` behavior in symbol_indexing.jl,
missing `using RecursiveArrayToolsShorthandConstructors` for `AP[...]`).
Those are out of scope here.

Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>

Author: ChrisRackauckas

test/downstream/Project.toml

@@ -14,10 +14,10 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 
 [compat]
 ArrayInterface = "7"
-ModelingToolkit = "8.33, 9"
+ModelingToolkit = "8.33, 9, 10, 11"
 MonteCarloMeasurements = "1.1"
 NLsolve = "4"
-OrdinaryDiffEq = "6.31"
+OrdinaryDiffEq = "6.31, 7"
 StaticArrays = "1"
 SymbolicIndexingInterface = "0.3"
 Tables = "1"