CompatHelper: bump compat for JET to 0.11 for package test, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the JET package from 0.9, 0.10 to 0.9, 0.10, 0.11 for package test.
This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry.
It is your responsibility to make sure that your package tests pass before you merge this pull request.

[github-actions]

Benchmark Report for Commit 701fee8

Computer Information

Julia Version 1.11.7
Commit f2b3dbda30a (2025-09-08 12:10 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 4 × AMD EPYC 7763 64-Core Processor
  WORD_SIZE: 64
  LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)

Benchmark Results

┌───────────────────────┬───────┬─────────────┬───────────────────┬────────┬────────────────┬─────────────────┐
│                 Model │   Dim │  AD Backend │           VarInfo │ Linked │ t(eval)/t(ref) │ t(grad)/t(eval) │
├───────────────────────┼───────┼─────────────┼───────────────────┼────────┼────────────────┼─────────────────┤
│ Simple assume observe │     1 │ forwarddiff │             typed │  false │            6.5 │             1.8 │
│           Smorgasbord │   201 │ forwarddiff │             typed │  false │          732.2 │            43.7 │
│           Smorgasbord │   201 │ forwarddiff │ simple_namedtuple │   true │          412.2 │            57.0 │
│           Smorgasbord │   201 │ forwarddiff │           untyped │   true │          781.5 │            37.7 │
│           Smorgasbord │   201 │ forwarddiff │       simple_dict │   true │         6494.1 │            29.5 │
│           Smorgasbord │   201 │ reversediff │             typed │   true │          760.8 │            52.7 │
│           Smorgasbord │   201 │    mooncake │             typed │   true │          716.7 │             5.7 │
│           Smorgasbord │   201 │      enzyme │             typed │   true │          886.7 │             3.9 │
│    Loop univariate 1k │  1000 │    mooncake │             typed │   true │         3887.3 │             5.7 │
│       Multivariate 1k │  1000 │    mooncake │             typed │   true │         1017.2 │             8.8 │
│   Loop univariate 10k │ 10000 │    mooncake │             typed │   true │        42640.5 │             5.4 │
│      Multivariate 10k │ 10000 │    mooncake │             typed │   true │         8919.3 │             9.6 │
│               Dynamic │    10 │    mooncake │             typed │   true │          119.0 │            11.8 │
│              Submodel │     1 │    mooncake │             typed │   true │            8.6 │             6.6 │
│                   LDA │    12 │ reversediff │             typed │   true │          996.4 │             2.0 │
└───────────────────────┴───────┴─────────────┴───────────────────┴────────┴────────────────┴─────────────────┘