Bump @octokit/rest from 16.43.2 to 19.0.4 in /platform/ios (#472)

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platform/ios/package.json

@@ -22,7 +22,7 @@
     "@mapbox/flow-remove-types": "^1.3.0-await.upstream.2",
     "@mapbox/mvt-fixtures": "3.5.1",
     "@octokit/plugin-retry": "^3.0.9",
-    "@octokit/rest": "^16.0.0",
+    "@octokit/rest": "^19.0.4",
     "aws-sdk": "^2.1213.0",
     "csscolorparser": "~1.0.2",
     "d3-queue": "3.0.7",