Bump react-dom from 16.6.1 to 16.6.3 (#199)

Bumps [react-dom](https://github.com/facebook/react) from 16.6.1 to 16.6.3.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/compare/v16.6.1...v16.6.3)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package-lock.json

@@ -9107,27 +9107,15 @@
       }
     },
     "react-dom": {
-      "version": "16.6.1",
-      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-16.6.1.tgz",
-      "integrity": "sha512-zm+wBuEMGm009Wt1uE4Zw5KcXOW7qC4E/xW/fpJsCsbOco4U/R84u+DzzO/S4SYSdNBcqcaulcp4w3FXl8pImw==",
+      "version": "16.6.3",
+      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-16.6.3.tgz",
+      "integrity": "sha512-8ugJWRCWLGXy+7PmNh8WJz3g1TaTUt1XyoIcFN+x0Zbkoz+KKdUyx1AQLYJdbFXjuF41Nmjn5+j//rxvhFjgSQ==",
       "dev": true,
       "requires": {
         "loose-envify": "^1.1.0",
         "object-assign": "^4.1.1",
         "prop-types": "^15.6.2",
-        "scheduler": "^0.11.0"
-      },
-      "dependencies": {
-        "scheduler": {
-          "version": "0.11.0",
-          "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.11.0.tgz",
-          "integrity": "sha512-MAYbBfmiEHxF0W+c4CxMpEqMYK+rYF584VP/qMKSiHM6lTkBKKYOJaDiSILpJHla6hBOsVd6GucPL46o2Uq3sg==",
-          "dev": true,
-          "requires": {
-            "loose-envify": "^1.1.0",
-            "object-assign": "^4.1.1"
-          }
-        }
+        "scheduler": "^0.11.2"
       }
     },
     "react-error-overlay": {

package.json

@@ -45,7 +45,7 @@
     "micro-dev": "^3.0.0",
     "next": "^7.0.2",
     "react": "^16.6.3",
-    "react-dom": "^16.6.1",
+    "react-dom": "^16.6.3",
     "standard": "^12.0.1",
     "supertest": "^3.3.0",
     "tap": "^12.1.0"