Update dependency @element-hq/element-call-embedded to v0.21.0 (#34222)

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

apps/web/package.json

@@ -121,7 +121,7 @@
         "@babel/preset-env": "^7.12.11",
         "@babel/preset-react": "^7.12.10",
         "@babel/preset-typescript": "^7.12.7",
-        "@element-hq/element-call-embedded": "0.20.3",
+        "@element-hq/element-call-embedded": "0.21.0",
         "@element-hq/element-web-playwright-common": "workspace:*",
         "@fetch-mock/jest": "^0.2.20",
         "@fetch-mock/vitest": "^0.2.18",