Update widget-api to beta.12

package.json

@@ -60,7 +60,7 @@
     "katex": "^0.12.0",
     "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
     "matrix-react-sdk": "github:matrix-org/matrix-react-sdk#develop",
-    "matrix-widget-api": "0.1.0-beta.11",
+    "matrix-widget-api": "^0.1.0-beta.12",
     "olm": "https://packages.matrix.org/npm/olm/olm-3.2.1.tgz",
     "prop-types": "^15.7.2",
     "react": "^16.14.0",

yarn.lock

@@ -7594,10 +7594,10 @@ matrix-react-test-utils@^0.2.2:
   resolved "https://registry.yarnpkg.com/matrix-react-test-utils/-/matrix-react-test-utils-0.2.2.tgz#c87144d3b910c7edc544a6699d13c7c2bf02f853"
   integrity sha512-49+7gfV6smvBIVbeloql+37IeWMTD+fiywalwCqk8Dnz53zAFjKSltB3rmWHso1uecLtQEcPtCijfhzcLXAxTQ==
 
-[email protected]:
-  version "0.1.0-beta.11"
-  resolved "https://registry.yarnpkg.com/matrix-widget-api/-/matrix-widget-api-0.1.0-beta.11.tgz#3658e244bf82eebea36e64475ebfce86b778b476"
-  integrity sha512-RxIghopRKTQdmYMJzZg/QR+wcPcKe9S1pZZ31zN/M1LKsvTLThBYdMcP1idKh7MkhpO9eCdCVjJOMJTrqxNzbQ==
+[email protected], matrix-widget-api@^0.1.0-beta.12:
+  version "0.1.0-beta.12"
+  resolved "https://registry.yarnpkg.com/matrix-widget-api/-/matrix-widget-api-0.1.0-beta.12.tgz#6cadeabde14f02949b7c3177434a4755942559b8"
+  integrity sha512-43xVAzLYzddYF73r6NK7NZ3geDLshQqCNAAcv0t5LFyFkKYGWDQG/cg8Vn8d37wm9WVBqYZUOXy9vBD4JcWVPA==
   dependencies:
     "@types/events" "^3.0.0"
     events "^3.2.0"