Upgrade matrix-js-sdk to 9.3.0-rc.1

package.json

@@ -58,6 +58,7 @@
     "blueimp-canvas-to-blob": "^3.27.0",
     "browser-encrypt-attachment": "^0.3.0",
     "browser-request": "^0.3.3",
+    "cheerio": "^1.0.0-rc.3",
     "classnames": "^2.2.6",
     "commonmark": "^0.29.1",
     "counterpart": "^0.18.6",
@@ -77,10 +78,9 @@
     "html-entities": "^1.3.1",
     "is-ip": "^2.0.0",
     "katex": "^0.12.0",
-    "cheerio": "^1.0.0-rc.3",
     "linkifyjs": "^2.1.9",
     "lodash": "^4.17.19",
-    "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
+    "matrix-js-sdk": "9.3.0-rc.1",
     "matrix-widget-api": "^0.1.0-beta.10",
     "minimist": "^1.2.5",
     "pako": "^1.0.11",