Upgrade node-fs-extra

Summary:
Changes are mostly bug fixes, that shouldn't affect us. From the change log:

7.0.1 / 2018-11-07
------------------

- Fix `removeSync()` on Windows, in some cases, it would error out with `ENOTEMPTY` ([#646](jprichardson/node-fs-extra#646))
- Document `mode` option for `ensureDir*()` ([#587](jprichardson/node-fs-extra#587))
- Don't include documentation files in npm package tarball ([#642](jprichardson/node-fs-extra#642), [#643](jprichardson/node-fs-extra#643))

7.0.0 / 2018-07-16
------------------

- **BREAKING:** Refine `copy*()` handling of symlinks to properly detect symlinks that point to the same file. ([#582](jprichardson/node-fs-extra#582))
- Fix bug with copying write-protected directories ([#600](jprichardson/node-fs-extra#600))
- Universalify `fs.lchmod()` ([#596](jprichardson/node-fs-extra#596))
- Add `engines` field to `package.json` ([#580](jprichardson/node-fs-extra#580))

6.0.1 / 2018-05-09
------------------

- Fix `fs.promises` `ExperimentalWarning` on Node v10.1.0 ([#578](jprichardson/node-fs-extra#578))

6.0.0 / 2018-05-01
------------------

- Drop support for Node.js versions 4, 5, & 7 ([#564](jprichardson/node-fs-extra#564))
- Rewrite `move` to use `fs.rename` where possible ([#549](jprichardson/node-fs-extra#549))
- Don't convert relative paths to absolute paths for `filter` ([#554](jprichardson/node-fs-extra#554))
- `copy*`'s behavior when `preserveTimestamps` is `false` has been OS-dependent since 5.0.0, but that's now explicitly noted in the docs ([#563](jprichardson/node-fs-extra#563))
- Fix subdirectory detection for `copy*` & `move*` ([#541](jprichardson/node-fs-extra#541))
- Handle case-insensitive paths correctly in `copy*` ([#568](jprichardson/node-fs-extra#568))

Reviewed By: jknoxville

Differential Revision: D13023753

fbshipit-source-id: 1ecc6f40be4c8146f92dd29ede846b5ab56765ea

package.json

@@ -66,7 +66,7 @@
     "electron-devtools-installer": "^2.2.0",
     "emotion": "^9.2.6",
     "express": "^4.15.2",
-    "fs-extra": "^5.0.0",
+    "fs-extra": "^7.0.1",
     "invariant": "^2.2.2",
     "lodash.debounce": "^4.0.8",
     "mkdirp": "^0.5.1",

yarn.lock

@@ -2879,17 +2879,18 @@ fs-extra@^4.0.1:
     jsonfile "^4.0.0"
     universalify "^0.1.0"
 
-fs-extra@^5.0.0:
-  version "5.0.0"
-  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-5.0.0.tgz#414d0110cdd06705734d055652c5411260c31abd"
+fs-extra@^6.0.0:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-6.0.1.tgz#8abc128f7946e310135ddc93b98bddb410e7a34b"
   dependencies:
     graceful-fs "^4.1.2"
     jsonfile "^4.0.0"
     universalify "^0.1.0"
 
-fs-extra@^6.0.0:
-  version "6.0.1"
-  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-6.0.1.tgz#8abc128f7946e310135ddc93b98bddb410e7a34b"
+fs-extra@^7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-7.0.1.tgz#4f189c44aa123b895f722804f55ea23eadc348e9"
+  integrity sha512-YJDaCJZEnBmcbw13fvdAM9AwNOJwOzrE4pqMqBq5nFiEqXUqHwlK4B+3pUw6JNvfSPtX05xFHtYy/1ni01eGCw==
   dependencies:
     graceful-fs "^4.1.2"
     jsonfile "^4.0.0"