Bump @babel/preset-react from 7.0.0 to 7.6.3 (mastodon#12315)

Bumps [@babel/preset-react](https://github.com/babel/babel) from 7.0.0 to 7.6.3.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](babel/babel@v7.0.0...v7.6.3)

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

package.json

@@ -69,7 +69,7 @@
     "@babel/plugin-transform-react-jsx-source": "^7.5.0",
     "@babel/plugin-transform-runtime": "^7.5.5",
     "@babel/preset-env": "^7.6.0",
-    "@babel/preset-react": "^7.0.0",
+    "@babel/preset-react": "^7.6.3",
     "@babel/runtime": "^7.5.4",
     "@clusterws/cws": "^0.15.2",
     "array-includes": "^3.0.3",

yarn.lock

@@ -757,10 +757,10 @@
     js-levenshtein "^1.1.3"
     semver "^5.5.0"
 
-"@babel/preset-react@^7.0.0":
-  version "7.0.0"
-  resolved "https://registry.yarnpkg.com/@babel/preset-react/-/preset-react-7.0.0.tgz#e86b4b3d99433c7b3e9e91747e2653958bc6b3c0"
-  integrity sha512-oayxyPS4Zj+hF6Et11BwuBkmpgT/zMxyuZgFrMeZID6Hdh3dGlk4sHCAhdBCpuCKW2ppBfl2uCCetlrUIJRY3w==
+"@babel/preset-react@^7.6.3":
+  version "7.6.3"
+  resolved "https://registry.yarnpkg.com/@babel/preset-react/-/preset-react-7.6.3.tgz#d5242c828322520205ae4eda5d4f4f618964e2f6"
+  integrity sha512-07yQhmkZmRAfwREYIQgW0HEwMY9GBJVuPY4Q12UC72AbfaawuupVWa8zQs2tlL+yun45Nv/1KreII/0PLfEsgA==
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
     "@babel/plugin-transform-react-display-name" "^7.0.0"