QA: allow JET 0.11 so QA runs on Julia 1.12

[ChrisRackauckas-Claude]

Problem

The tests / QA (julia 1, ubuntu-latest) check on main is red. On Julia 1.12.6 the QA sub-env (test/qa/Project.toml) pins JET = "0.9, 0.10", so the resolver selects JET v0.10.14, which fails to precompile:

ERROR: LoadError: MethodError: no method matching add_active_gotos!(::BitVector, ::Core.CodeInfo, ::Compiler.CFG, ::Compiler.GenericDomTree{true})
  add_active_gotos!(::Any, ::Core.CodeInfo, ::Compiler.CFG, ::Any, ::LoweredCodeUtils.SelectiveEvalController)

This is a JET 0.10.x / LoweredCodeUtils signature mismatch against the Julia 1.12 compiler internals. JET 0.11 is the line that supports Julia 1.12.

Fix

Widen the QA sub-env compat to JET = "0.9, 0.10, 0.11". The resolver then picks a JET that works for each Julia in the QA matrix:

• Julia 1.12 ("1") → JET 0.11.4
• Julia 1.10 ("lts") → JET 0.9.18 (JET 0.11 requires julia ≥ 1.12)

No test was skipped, disabled, or loosened.

Local verification

Reproduced and verified with julia +1.12 / julia +1.10 on the QA sub-env.

Before (current 0.9, 0.10), Julia 1.12.6:

JET resolved to: 0.10.14
Failed to precompile JET ... MethodError: no method matching add_active_gotos!(...)

After (0.9, 0.10, 0.11):

# Julia 1.12.6
JET resolved to: 0.11.4
Test Summary:       | Pass  Total  Time
JET Static Analysis |   12     12  4.3s

# Julia 1.10.11 (LTS)
JET resolved to: 0.9.18
Test Summary:       | Pass  Total  Time
JET Static Analysis |   12     12  4.0s

Note

This PR fixes the QA check only. The Documentation build is also red, but for an unrelated, genuine doc-content reason: the docs/src/neural_ode_training.md example does using DiffEqFlux and using DataCollocations, both of which export collocate_data, so the unqualified call hits UndefVarError: collocate_data not defined (binding ambiguity). That is a separate doc fix (qualify the name) and is intentionally not bundled here.

Please ignore until reviewed by @ChrisRackauckas.