Bump gulp-babel from 6.1.3 to 8.0.0

Bumps [gulp-babel](https://github.com/babel/gulp-babel) from 6.1.3 to 8.0.0.
- [Release notes](https://github.com/babel/gulp-babel/releases)
- [Changelog](https://github.com/babel/gulp-babel/blob/master/CHANGELOG.md)
- [Commits](babel/gulp-babel@v6.1.3...v8.0.0)

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

package.json

@@ -21,7 +21,7 @@
     "babel-polyfill": "^6.26.0",
     "babel-preset-es2015": "^6.24.1",
     "gulp": "^3.9.1",
-    "gulp-babel": "^6.1.2",
+    "gulp-babel": "^7.0.1",
     "gulp-cli": "^2.0.1",
     "gulp-concat": "^2.6.1",
     "gulp-insert": "^0.5.0",

yarn.lock

@@ -403,7 +403,7 @@ babel-code-frame@^6.26.0:
     esutils "^2.0.2"
     js-tokens "^3.0.2"
 
-babel-core@^6.23.1, babel-core@^6.26.0, babel-core@^6.26.3:
+babel-core@^6.26.0, babel-core@^6.26.3:
   version "6.26.3"
   resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-6.26.3.tgz#b2e2f09e342d0f0c88e2f02e067794125e75c207"
   integrity sha512-6jyFLuDmeidKmUEb3NM+/yawG0M2bDZ9Z1qbZP59cyHLz8kYGKYwpJP0UwUKKUiTRNvxfLesJnTedqczP7cTDA==
@@ -2200,13 +2200,11 @@ graceful-fs@~1.2.0:
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-1.2.3.tgz#15a4806a57547cb2d2dbf27f42e89a8c3451b364"
   integrity sha1-FaSAaldUfLLS2/J/QuiajDRRs2Q=
 
-gulp-babel@^6.1.2:
-  version "6.1.3"
-  resolved "https://registry.yarnpkg.com/gulp-babel/-/gulp-babel-6.1.3.tgz#5aad8acb0db6b7f2f0be19eeee9528f2064df631"
-  integrity sha512-tm15R3rt4gO59WXCuqrwf4QXJM9VIJC+0J2NPYSC6xZn+cZRD5y5RPGAiHaDxCJq7Rz5BDljlrk3cEjWADF+wQ==
+gulp-babel@^7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/gulp-babel/-/gulp-babel-7.0.1.tgz#b9c8e29fa376b36c57989db820fc1c1715bb47cb"
+  integrity sha512-UqHS3AdxZyJCRxqnAX603Dj3k/Wx6hzcgmav3QcxvsIFq3Y8ZkU7iXd0O+JwD5ivqCc6o0r1S7tCB/xxLnuSNw==
   dependencies:
-    babel-core "^6.23.1"
-    object-assign "^4.0.1"
     plugin-error "^1.0.1"
     replace-ext "0.0.1"
     through2 "^2.0.0"