webrtc-audio-processing: update to 1.3; revbump dependents

[cinerea0]

Testing the changes

• I tested the changes in this PR: YES

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@ahesford Are there any potential negative consequences of forcing abseil to use C++17 you can think of?

[cinerea0]

Guess I need that musl patch after all.

[ahesford]

The only issue I foresee would be some dependant refusing to build with C++17. If all of the dependants of abseil build, we should be fine.