CompatHelper: bump compat for AdvancedVI to 0.6 for package bench, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the AdvancedVI package from 0.7 to 0.7, 0.6 for package bench.
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]

AdvancedVI.jl documentation for PR #221 is available at:
https://TuringLang.github.io/AdvancedVI.jl/previews/PR221/

[github-actions]

Benchmark Results

Benchmark suite	Current: bc7da8e	Previous: db15461	Ratio
normal/RepGradELBO + STL/meanfield/Zygote	2236328131 ns	2460531085 ns	0.91
normal/RepGradELBO + STL/meanfield/ReverseDiff	584926592 ns	593417542 ns	0.99
normal/RepGradELBO + STL/meanfield/Mooncake	190368913 ns	245091874 ns	0.78
normal/RepGradELBO + STL/fullrank/Zygote	1674815989 ns	1932656603 ns	0.87
normal/RepGradELBO + STL/fullrank/ReverseDiff	1109764173 ns	1115706204 ns	0.99
normal/RepGradELBO + STL/fullrank/Mooncake	480416315 ns	659773727.5 ns	0.73
normal/RepGradELBO/meanfield/Zygote	1243443795 ns	1514658031 ns	0.82
normal/RepGradELBO/meanfield/ReverseDiff	283741496.5 ns	302198740 ns	0.94
normal/RepGradELBO/meanfield/Mooncake	140268590 ns	171503791.5 ns	0.82
normal/RepGradELBO/fullrank/Zygote	809191706 ns	1053510637 ns	0.77
normal/RepGradELBO/fullrank/ReverseDiff	530633461 ns	590708132 ns	0.90
normal/RepGradELBO/fullrank/Mooncake	401513807 ns	542788814 ns	0.74

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