CompatHelper: bump compat for DynamicExpressions to 0.12, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the DynamicExpressions package from 0.11 to 0.11, 0.12.
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 Results

	master	65ec59e...	t[master]/t[65ec59e...]
search/multithreading	56.1 ± 3.1 s	56.3 ± 3.9 s	0.997
search/serial	55.7 ± 1.7 s	56.1 ± 1.4 s	0.993
time_to_load	2.26 ± 0.00091 s	2.26 ± 0.0017 s	0.999
utils/best_of_sample	1.1 ± 0.4 μs	1.3 ± 0.4 μs	0.846
utils/check_constraints_x10	18.4 ± 4.5 μs	18.7 ± 4.5 μs	0.984
utils/compute_complexity_x10/Float64	3.5 ± 0.2 μs	3.4 ± 0.2 μs	1.03
utils/compute_complexity_x10/Int64	3.6 ± 0.1 μs	3.6 ± 0.2 μs	1
utils/compute_complexity_x10/nothing	2.4 ± 0.1 μs	2.5 ± 0.2 μs	0.96
utils/optimize_constants_x10	0.045 ± 0.0092 s	0.0444 ± 0.0096 s	1.01

Benchmark Plots

A plot of the benchmark results have been uploaded as an artifact to the workflow run for this PR.
Go to "Actions"->"Benchmark a pull request"->[the most recent run]->"Artifacts" (at the bottom).