CompatHelper: bump compat for Bijectors to 0.15 for package docs, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the Bijectors package from 0.13.6, 0.14 to 0.13.6, 0.14, 0.15 for package docs.
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

Benchmark suite	Current: 215b18c	Previous: 813c8ef	Ratio
normal/RepGradELBO + STL/meanfield/Zygote	15541343661 ns	15278580244 ns	1.02
normal/RepGradELBO + STL/meanfield/ForwardDiff	3710593226 ns	3694636535 ns	1.00
normal/RepGradELBO + STL/meanfield/ReverseDiff	3486525301 ns	3329482363 ns	1.05
normal/RepGradELBO + STL/fullrank/Zygote	15540691210 ns	15166364486 ns	1.02
normal/RepGradELBO + STL/fullrank/ForwardDiff	3923287962 ns	4013203959 ns	0.98
normal/RepGradELBO + STL/fullrank/ReverseDiff	6114566779 ns	5998211363 ns	1.02
normal/RepGradELBO/meanfield/Zygote	7882056505 ns	7233935632 ns	1.09
normal/RepGradELBO/meanfield/ForwardDiff	2636604485 ns	2744017063 ns	0.96
normal/RepGradELBO/meanfield/ReverseDiff	1571184022 ns	1541986027 ns	1.02
normal/RepGradELBO/fullrank/Zygote	7266923473 ns	7279956753 ns	1.00
normal/RepGradELBO/fullrank/ForwardDiff	2895769120 ns	3015713987 ns	0.96
normal/RepGradELBO/fullrank/ReverseDiff	2723788481 ns	2706597626 ns	1.01
normal + bijector/RepGradELBO + STL/meanfield/Zygote	23016936595 ns	23631518352 ns	0.97
normal + bijector/RepGradELBO + STL/meanfield/ForwardDiff	9385490145 ns	9326823213 ns	1.01
normal + bijector/RepGradELBO + STL/meanfield/ReverseDiff	4771638308 ns	4873920861 ns	0.98
normal + bijector/RepGradELBO + STL/fullrank/Zygote	22805186374 ns	23652319624 ns	0.96
normal + bijector/RepGradELBO + STL/fullrank/ForwardDiff	10133064763 ns	10630601943 ns	0.95
normal + bijector/RepGradELBO + STL/fullrank/ReverseDiff	7917569436 ns	8060492370 ns	0.98
normal + bijector/RepGradELBO/meanfield/Zygote	13981313047 ns	14971019839 ns	0.93
normal + bijector/RepGradELBO/meanfield/ForwardDiff	8272981162 ns	8362074447 ns	0.99
normal + bijector/RepGradELBO/meanfield/ReverseDiff	2792897879 ns	2821481694 ns	0.99
normal + bijector/RepGradELBO/fullrank/Zygote	14020518871 ns	15083010117 ns	0.93
normal + bijector/RepGradELBO/fullrank/ForwardDiff	9405955291 ns	9096298655 ns	1.03
normal + bijector/RepGradELBO/fullrank/ReverseDiff	4331094708 ns	4269074030 ns	1.01

This comment was automatically generated by workflow using github-action-benchmark.