CompatHelper: bump compat for Bijectors in [weakdeps] to 0.15, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the Bijectors package from 0.13, 0.14 to 0.13, 0.14, 0.15.
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: cad376c	Previous: 6f6c6c2	Ratio
normal/RepGradELBO + STL/meanfield/Zygote	16037642844 ns	14633353105 ns	1.10
normal/RepGradELBO + STL/meanfield/ForwardDiff	3416719940 ns	3565903393 ns	0.96
normal/RepGradELBO + STL/meanfield/ReverseDiff	3259973108 ns	3356667796 ns	0.97
normal/RepGradELBO + STL/fullrank/Zygote	16021639732 ns	14633635435 ns	1.09
normal/RepGradELBO + STL/fullrank/ForwardDiff	3669390123 ns	3837143613 ns	0.96
normal/RepGradELBO + STL/fullrank/ReverseDiff	5826877072 ns	5909327919 ns	0.99
normal/RepGradELBO/meanfield/Zygote	7652048067 ns	7110793561 ns	1.08
normal/RepGradELBO/meanfield/ForwardDiff	2489531090.5 ns	2558304588 ns	0.97
normal/RepGradELBO/meanfield/ReverseDiff	1502088937 ns	1520388367 ns	0.99
normal/RepGradELBO/fullrank/Zygote	7671021271 ns	7164872885 ns	1.07
normal/RepGradELBO/fullrank/ForwardDiff	2716289822 ns	2847835267 ns	0.95
normal/RepGradELBO/fullrank/ReverseDiff	2612622779 ns	2664980683 ns	0.98
normal + bijector/RepGradELBO + STL/meanfield/Zygote	24221830041 ns	22480573208 ns	1.08
normal + bijector/RepGradELBO + STL/meanfield/ForwardDiff	9222665139 ns	8976023812 ns	1.03
normal + bijector/RepGradELBO + STL/meanfield/ReverseDiff	4555320436 ns	4611301038 ns	0.99
normal + bijector/RepGradELBO + STL/fullrank/Zygote	24410742309 ns	22581135532 ns	1.08
normal + bijector/RepGradELBO + STL/fullrank/ForwardDiff	9415945425 ns	9707519899 ns	0.97
normal + bijector/RepGradELBO + STL/fullrank/ReverseDiff	7741124368 ns	7750286615 ns	1.00
normal + bijector/RepGradELBO/meanfield/Zygote	15043634322 ns	14464403157 ns	1.04
normal + bijector/RepGradELBO/meanfield/ForwardDiff	8320185736 ns	8035658190 ns	1.04
normal + bijector/RepGradELBO/meanfield/ReverseDiff	2668776008 ns	2654798128 ns	1.01
normal + bijector/RepGradELBO/fullrank/Zygote	15141848867 ns	14385528591 ns	1.05
normal + bijector/RepGradELBO/fullrank/ForwardDiff	8448225939 ns	8602908022 ns	0.98
normal + bijector/RepGradELBO/fullrank/ReverseDiff	4038901936 ns	4067431827 ns	0.99

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