fix(media-helper): update internal-media-core with webrtc-core mute changes

[brycetham]

COMPLETES WEBEX-368645, WEBEX-364231

This pull request addresses

Updating the internal-media-core version. This includes updates from json-multistream (https://sqbu-github.cisco.com/CPaaS/json-multistream/pull/45) and webrtc-core (webex/webrtc-core#69).

by making the following changes

No changes on the SDK level other than updating package.json and unit tests.

Change Type

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Tooling change
• Internal code refactor

The following scenarios where tested

Main goal here is to make sure webex/webrtc-core#69 doesn't break mute/unmute functionality in the web client. Manually tested on a locally run web client with the following cases related to mute/unmute:

1. Web client mutes/unmutes their own microphone/camera.
2. Host mutes web client's microphone/camera.
3. Host unmutes web client user's microphone with "moderated unmute mode" enabled.
   • However, this sometimes does not work if "allow attendees to unmute themselves in the meeting" is also disabled. This is an existing bug for the web client. I've filed SPARK-493488 for it.
4. Web client changes microphone/camera devices while muted/unmuted.
5. Web client joins a meeting while muted/unmuted.
6. Web client joins a meeting with "mute on entry" enabled.
7. Web client mutes/unmutes microphone via device controls (i.e. physical mute button on machine).
   • However, this only changes the mute state in the participant list, not the local mute controls. This is an existing bug for the web client. I've filed SPARK-493485 for it.
8. Web client user minimizes/unminimizes shared window, which mutes/unmutes share video.
9. Web client user disconnects/reconnects shared monitor, which mutes/unmutes share video.

I certified that

• I have read and followed contributing guidelines

• I discussed changes with code owners prior to submitting this pull request

• I have not skipped any automated checks

• All existing and new tests passed

• I have updated the documentation accordingly

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Make sure to have followed the contributing guidelines before submitting.

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