Fix RecursiveArrayTools compat lower bound for alldeps CI

The alldeps CI job was failing because RecursiveArrayTools 3.0.0 has
dependency resolution conflicts with other packages. This updates the
compat lower bound from "3" to "3.1" to exclude the problematic version.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: ChrisRackauckas

Project.toml

@@ -19,7 +19,7 @@ ChainRulesCore = "1"
 ForwardDiff = "0.10.3, 1"
 MacroTools = "0.5"
 PreallocationTools = "0.4"
-RecursiveArrayTools = "3"
+RecursiveArrayTools = "3.1"
 StaticArrays = "1.0"
 julia = "1.10"