Update dependency matrix-widget-api to v1.15.0 (#5084)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

yarn.lock

@@ -5470,9 +5470,9 @@ matrix-mock-request@^2.5.0:
     expect "^28.1.0"
 
 matrix-widget-api@^1.14.0:
-  version "1.14.0"
-  resolved "https://registry.yarnpkg.com/matrix-widget-api/-/matrix-widget-api-1.14.0.tgz#aa90c40ace27d3165299f7dbc760a53001ce1446"
-  integrity sha512-DDvZGOQhI/rilPWg5VlLN7pHIsPt0Jt14lsuHDP+KU+fmpAQNITJ6aIld1ZoXWsrVGv2PS3x6K/MHtfruIOQJQ==
+  version "1.15.0"
+  resolved "https://registry.yarnpkg.com/matrix-widget-api/-/matrix-widget-api-1.15.0.tgz#a508f72a5993a95382bdf890bd9e54525295b321"
+  integrity sha512-Yu9rX9wyF3A1sqviKgiYHz8aGgL3HhJe9OXKi/lccr1eZnNb6y+ELdbshTjs+VLKM4rkTWt6CE3THsw3f/CZhg==
   dependencies:
     "@types/events" "^3.0.0"
     events "^3.2.0"