Fix DataDrivenLux downgrade CI: raise IntervalArithmetic and Optim floors (#629)

The Downgrade Sublibraries / test (lib/DataDrivenLux) lane is red on master
(run 28267588245, commit eb11901): the main Downgrade lane is green, only the
DataDrivenLux sublibrary fails, and only at minimum compat versions. It
resolves and builds, then fails at runtime with 5 errors. Two distinct root
causes, both gated by [compat] lower bounds:

1. IntervalArithmetic floor 0.22.0 (4 errors).
   safe_sin/safe_cos in src/utils.jl evaluate real(<f>(Complex(x))) on
   x::Interval{Float64} during path-interval propagation. Base's sin(::Complex)
   does `zr == 0`, which dispatches to ==(::Interval, ::Interval).
   IntervalArithmetic 0.22.0-0.22.9 throw
   ArgumentError("== is purposely not supported for intervals"); 0.22.10 added
   the thin-interval fallback so the comparison returns a value and
   sin(Complex{Interval}) works. Raise floor to 0.22.10.

2. Optim floor 1.7.6 (1 BoundsError).
   BoundsError: attempt to access Float64 at index [2] in
   LineSearches.var"#phidphi#2". LineSearches <= 7.5.x make_phidphi does
   `f, g = value_gradient!(df, x_new)` and fails to unpack the scalar return of
   ManifoldObjective.value_gradient!. LineSearches 7.6.0 switched to
   value_jvp!(df, x_new, s) (a 2-tuple) and requires NLSolversBase 8. No Optim
   1.x admits NLSolversBase 8 (all cap 7.9.0), so at the Optim 1.7 floor
   LineSearches stays <= 7.5.x and the BoundsError persists. Optim 2.0.0 pulls
   LineSearches 7.6+ / NLSolversBase 8. Require Optim = "2".

Verified locally on Julia 1.10 LTS by pinning the new floors to their minimums
(IntervalArithmetic v0.22.10, Optim v2.0.0): resolver co-installs
IntervalArithmetic 0.22.10, Optim 2.0.0, LineSearches 7.7.1, NLSolversBase
8.0.0; DataDrivenLux Core test group is 96/96 pass, 0 fail, 0 error (was 0
pass / 5 errored on the old floors).

Co-authored-by: ChrisRackauckas-Claude <accounts@chrisrackauckas.com>

Author: ChrisRackauckas-Claude

lib/DataDrivenLux/Project.toml

@@ -1,6 +1,6 @@
 name = "DataDrivenLux"
 uuid = "47881146-99d0-492a-8425-8f2f33327637"
-version = "0.2.4"
+version = "0.2.5"
 authors = ["JuliusMartensen <julius.martensen@gmail.com>"]
 
 [deps]
@@ -45,13 +45,13 @@ Distributions = "0.25.123"
 DistributionsAD = "0.6"
 DocStringExtensions = "0.9.3"
 ForwardDiff = "0.10, 1"
-IntervalArithmetic = "0.22, 0.23, 1"
+IntervalArithmetic = "0.22.10, 0.23, 1"
 InverseFunctions = "0.1"
 LinearAlgebra = "1.10"
 Logging = "1.10"
 Lux = "1"
 LuxCore = "1"
-Optim = "1.7, 2"
+Optim = "2"
 Optimisers = "0.3, 0.4"
 OrdinaryDiffEq = "6, 7"
 Pkg = "1.10"