Add proper dependencies for webrtc/modules/audio_coding/codecs

The audio_decoder_interface and audio_encoder_interface
targets are depending on rtc_base_approved headers but don't
declare such dependencies.

NOTRY=True

Review URL: https://codereview.webrtc.org/1916953002

Cr-Original-Commit-Position: refs/heads/master@{#12500}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 4e7f6c188770765f4dff52d31fb77a6630a51b80