Add matrix_rtc_session config options + bump js-sdk (#2756)

* Add matrix_rtc_session config options
* Bump js-sdk

6971e7beba...fcb69b16ad

Also brings in:

- https://github.com/matrix-org/matrix-js-sdk/pull/4342
- https://github.com/matrix-org/matrix-js-sdk/pull/4494

yarn.lock

@@ -5998,9 +5998,9 @@ matrix-events-sdk@0.0.1:
   resolved "https://registry.yarnpkg.com/matrix-events-sdk/-/matrix-events-sdk-0.0.1.tgz#c8c38911e2cb29023b0bbac8d6f32e0de2c957dd"
   integrity sha512-1QEOsXO+bhyCroIe2/A5OwaxHvBm7EsSQ46DEDn8RBIfQwN5HWBpFvyWWR4QY0KHPPnnJdI99wgRiAl7Ad5qaA==
 
-matrix-js-sdk@matrix-org/matrix-js-sdk#6971e7bebaad643c233e5057da7a0d42441c0789:
+matrix-js-sdk@matrix-org/matrix-js-sdk#fcb69b16ad8d170c67ea844f83543d467bbd7707:
   version "34.10.0"
-  resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/6971e7bebaad643c233e5057da7a0d42441c0789"
+  resolved "https://codeload.github.com/matrix-org/matrix-js-sdk/tar.gz/fcb69b16ad8d170c67ea844f83543d467bbd7707"
   dependencies:
     "@babel/runtime" "^7.12.5"
     "@matrix-org/matrix-sdk-crypto-wasm" "^9.0.0"
@@ -6011,7 +6011,7 @@ matrix-js-sdk@matrix-org/matrix-js-sdk#6971e7bebaad643c233e5057da7a0d42441c0789:
     jwt-decode "^4.0.0"
     loglevel "^1.7.1"
     matrix-events-sdk "0.0.1"
-    matrix-widget-api "^1.8.2"
+    matrix-widget-api "^1.10.0"
     oidc-client-ts "^3.0.1"
     p-retry "4"
     sdp-transform "^2.14.1"