chore(v3.1.x): release 3.1.7

[github-actions]

🤖 I have created a release beep boop

3.1.7 (2022-04-21)

Bug Fixes

• cea: make a more robust CEA MP4 parser (#3965) (b292fb3)
• dash: Account for bandwidth before filtering text stream (#3765) (612133e), closes #3724
• dash: Fix performance regression (#4064) (a35efd1)
• Fix exceptions when quickly shutting down src= on Safari (#4088) (da14ae4), closes #4087
• Fix playRangeEnd for certain content (#4068) (7543dd1), closes #4026
• performance: Eliminate use of ES6 generators (#4092) (a131bdd), closes #4062
• Select first of identical audio streams (#3869) (4174693)
• ttml: Center subtitles by default (#4023) (483966c)
• UI: Add cursor pointer to range elements (#4059) (667962e), closes #3220

---

This PR was generated with Release Please. See documentation.

[google-cla]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

For more information, open the CLA check for this pull request.

[github-actions]

🤖 Release is at https://github.com/shaka-project/shaka-player/releases/tag/v3.1.7 🌻