Bump @babel/plugin-proposal-class-properties from 7.4.0 to 7.4.4 (#39)

Bumps [@babel/plugin-proposal-class-properties](https://github.com/babel/babel) from 7.4.0 to 7.4.4.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](babel/babel@v7.4.0...v7.4.4)

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

Author: dependabot-preview[bot]

yarn.lock

@@ -89,17 +89,17 @@
     "@babel/traverse" "^7.4.4"
     "@babel/types" "^7.4.4"
 
-"@babel/helper-create-class-features-plugin@^7.4.0":
-  version "7.4.3"
-  resolved "https://registry.yarnpkg.com/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.4.3.tgz#5bbd279c6c3ac6a60266b89bbfe7f8021080a1ef"
-  integrity sha512-UMl3TSpX11PuODYdWGrUeW6zFkdYhDn7wRLrOuNVM6f9L+S9CzmDXYyrp3MTHcwWjnzur1f/Op8A7iYZWya2Yg==
+"@babel/helper-create-class-features-plugin@^7.4.4":
+  version "7.4.4"
+  resolved "https://registry.yarnpkg.com/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.4.4.tgz#fc3d690af6554cc9efc607364a82d48f58736dba"
+  integrity sha512-UbBHIa2qeAGgyiNR9RszVF7bUHEdgS4JAUNT8SiqrAN6YJVxlOxeLr5pBzb5kan302dejJ9nla4RyKcR1XT6XA==
   dependencies:
     "@babel/helper-function-name" "^7.1.0"
     "@babel/helper-member-expression-to-functions" "^7.0.0"
     "@babel/helper-optimise-call-expression" "^7.0.0"
     "@babel/helper-plugin-utils" "^7.0.0"
-    "@babel/helper-replace-supers" "^7.4.0"
-    "@babel/helper-split-export-declaration" "^7.4.0"
+    "@babel/helper-replace-supers" "^7.4.4"
+    "@babel/helper-split-export-declaration" "^7.4.4"
 
 "@babel/helper-define-map@^7.4.4":
   version "7.4.4"
@@ -301,11 +301,11 @@
     "@babel/plugin-syntax-async-generators" "^7.2.0"
 
 "@babel/plugin-proposal-class-properties@^7.4.0":
-  version "7.4.0"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-class-properties/-/plugin-proposal-class-properties-7.4.0.tgz#d70db61a2f1fd79de927eea91f6411c964e084b8"
-  integrity sha512-t2ECPNOXsIeK1JxJNKmgbzQtoG27KIlVE61vTqX0DKR9E9sZlVVxWUtEW9D5FlZ8b8j7SBNCHY47GgPKCKlpPg==
+  version "7.4.4"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-class-properties/-/plugin-proposal-class-properties-7.4.4.tgz#93a6486eed86d53452ab9bab35e368e9461198ce"
+  integrity sha512-WjKTI8g8d5w1Bc9zgwSz2nfrsNQsXcCf9J9cdCvrJV6RF56yztwm4TmJC0MgJ9tvwO9gUA/mcYe89bLdGfiXFg==
   dependencies:
-    "@babel/helper-create-class-features-plugin" "^7.4.0"
+    "@babel/helper-create-class-features-plugin" "^7.4.4"
     "@babel/helper-plugin-utils" "^7.0.0"
 
 "@babel/plugin-proposal-json-strings@^7.2.0":