fix: Fix issues with collections.abc in Python 3.10+

[Brainiarc7]

This issue is observed on Python 3.10+ and above.
This workaround addresses a major backwards compatibility break with a major Python release version where collections.abc isn't available.

Fixes #1192

[Brainiarc7]

A cleaner solution to this would be updating the third-party module protobuf to v.4.0.x.
That release already incorporates a cleaner fix for this.
The release used in shaka-packager (at present) is 3.3.0 from 5 years ago.

[joeyparrish]

The cmake branch, where we are overhauling the dependencies and the build system, uses source from around Protobuf v3.21.9 via git submodules. Does that version have the correct fixes, or should we bump to v4 in that branch?

I'll go ahead and merge this into main, but since it touches third-party code, and the cmake branch uses submodules, this can't be merged over to the cmake branch.