2024-08-23: Optional speech output is now on-demand

We previously would proactively load the speech output URLs when that feature was enabled. However, we received feedback that the proactive loading was wasteful. We now load only when the user clicks the speech icon, so the user will see a brief loading icon and then hear the speech play.

What's Changed

• On Demand Azure Speech Generation by @john0isaac in #1894
• Allow disabling app services auth by @mattgotteiner in #1932
• Bump the python-requirements group across 1 directory with 16 updates by @dependabot in #1924

Full Changelog: 2024-08-21...2024-08-23