Conversant: Enable audio requests

[johnwier]

Update yaml file to allow audio media type requests

[github-actions]

Code coverage summary

Note:

• Prebid team doesn't anticipate tests covering code paths that might result in marshal and unmarshal errors
• Coverage summary encompasses all commits leading up to the latest one, 10cc7d6

conversant

Refer here for heat map coverage report

github.com/prebid/prebid-server/v2/adapters/conversant/conversant.go:21:	MakeRequests	93.3%
github.com/prebid/prebid-server/v2/adapters/conversant/conversant.go:84:	parseCnvrParams	97.4%
github.com/prebid/prebid-server/v2/adapters/conversant/conversant.go:155:	MakeBids	92.9%
github.com/prebid/prebid-server/v2/adapters/conversant/conversant.go:190:	getBidType	100.0%
github.com/prebid/prebid-server/v2/adapters/conversant/conversant.go:207:	Builder		100.0%
total:										(statements)	95.7%

[johnwier]

Is there anything else I'm missing that's blocking this PR?

[SyntaxNode]

@johnwier We're just backlogged with reviews. I do see specific handling for banner and video in parseCnvrParams. Confirming no special handling is required for audio.

[bsardo]

This is looking good. @johnwier can you confirm that no additional audio specific changes are needed in parseCnvrParams? We see that there is banner specific and video specific logic there.

[johnwier]

yes, I can confirm that.