Bump @babel/plugin-proposal-class-properties from 7.5.5 to 7.7.4

Bumps [@babel/plugin-proposal-class-properties](https://github.com/babel/babel) from 7.5.5 to 7.7.4.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](babel/babel@v7.5.5...v7.7.4)

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

Author: dependabot-preview[bot]

yarn.lock

@@ -117,17 +117,17 @@
     "@babel/traverse" "^7.4.4"
     "@babel/types" "^7.4.4"
 
-"@babel/helper-create-class-features-plugin@^7.2.1", "@babel/helper-create-class-features-plugin@^7.5.5":
-  version "7.5.5"
-  resolved "https://registry.yarnpkg.com/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.5.5.tgz#401f302c8ddbc0edd36f7c6b2887d8fa1122e5a4"
-  integrity sha512-ZsxkyYiRA7Bg+ZTRpPvB6AbOFKTFFK4LrvTet8lInm0V468MWCaSYJE+I7v2z2r8KNLtYiV+K5kTCnR7dvyZjg==
+"@babel/helper-create-class-features-plugin@^7.2.1", "@babel/helper-create-class-features-plugin@^7.7.4":
+  version "7.7.4"
+  resolved "https://registry.yarnpkg.com/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.7.4.tgz#fce60939fd50618610942320a8d951b3b639da2d"
+  integrity sha512-l+OnKACG4uiDHQ/aJT8dwpR+LhCJALxL0mJ6nzjB25e5IPwqV1VOsY7ah6UB1DG+VOXAIMtuC54rFJGiHkxjgA==
   dependencies:
-    "@babel/helper-function-name" "^7.1.0"
-    "@babel/helper-member-expression-to-functions" "^7.5.5"
-    "@babel/helper-optimise-call-expression" "^7.0.0"
+    "@babel/helper-function-name" "^7.7.4"
+    "@babel/helper-member-expression-to-functions" "^7.7.4"
+    "@babel/helper-optimise-call-expression" "^7.7.4"
     "@babel/helper-plugin-utils" "^7.0.0"
-    "@babel/helper-replace-supers" "^7.5.5"
-    "@babel/helper-split-export-declaration" "^7.4.4"
+    "@babel/helper-replace-supers" "^7.7.4"
+    "@babel/helper-split-export-declaration" "^7.7.4"
 
 "@babel/helper-define-map@^7.5.5":
   version "7.5.5"
@@ -192,6 +192,13 @@
   dependencies:
     "@babel/types" "^7.5.5"
 
+"@babel/helper-member-expression-to-functions@^7.7.4":
+  version "7.7.4"
+  resolved "https://registry.yarnpkg.com/@babel/helper-member-expression-to-functions/-/helper-member-expression-to-functions-7.7.4.tgz#356438e2569df7321a8326644d4b790d2122cb74"
+  integrity sha512-9KcA1X2E3OjXl/ykfMMInBK+uVdfIVakVe7W7Lg3wfXUNyS3Q1HWLFRwZIjhqiCGbslummPDnmb7vIekS0C1vw==
+  dependencies:
+    "@babel/types" "^7.7.4"
+
 "@babel/helper-module-imports@^7.0.0":
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/@babel/helper-module-imports/-/helper-module-imports-7.0.0.tgz#96081b7111e486da4d2cd971ad1a4fe216cc2e3d"
@@ -230,6 +237,13 @@
   dependencies:
     "@babel/types" "^7.0.0"
 
+"@babel/helper-optimise-call-expression@^7.7.4":
+  version "7.7.4"
+  resolved "https://registry.yarnpkg.com/@babel/helper-optimise-call-expression/-/helper-optimise-call-expression-7.7.4.tgz#034af31370d2995242aa4df402c3b7794b2dcdf2"
+  integrity sha512-VB7gWZ2fDkSuqW6b1AKXkJWO5NyNI3bFL/kK79/30moK57blr6NbH8xcl2XcKCwOmJosftWunZqfO84IGq3ZZg==
+  dependencies:
+    "@babel/types" "^7.7.4"
+
 "@babel/helper-plugin-utils@^7.0.0":
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.0.0.tgz#bbb3fbee98661c569034237cc03967ba99b4f250"
@@ -270,6 +284,16 @@
     "@babel/traverse" "^7.5.5"
     "@babel/types" "^7.5.5"
 
+"@babel/helper-replace-supers@^7.7.4":
+  version "7.7.4"
+  resolved "https://registry.yarnpkg.com/@babel/helper-replace-supers/-/helper-replace-supers-7.7.4.tgz#3c881a6a6a7571275a72d82e6107126ec9e2cdd2"
+  integrity sha512-pP0tfgg9hsZWo5ZboYGuBn/bbYT/hdLPVSS4NMmiRJdwWhP0IznPwN9AE1JwyGsjSPLC364I0Qh5p+EPkGPNpg==
+  dependencies:
+    "@babel/helper-member-expression-to-functions" "^7.7.4"
+    "@babel/helper-optimise-call-expression" "^7.7.4"
+    "@babel/traverse" "^7.7.4"
+    "@babel/types" "^7.7.4"
+
 "@babel/helper-simple-access@^7.1.0":
   version "7.1.0"
   resolved "https://registry.yarnpkg.com/@babel/helper-simple-access/-/helper-simple-access-7.1.0.tgz#65eeb954c8c245beaa4e859da6188f39d71e585c"
@@ -355,11 +379,11 @@
     "@babel/helper-plugin-utils" "^7.0.0"
 
 "@babel/plugin-proposal-class-properties@^7.2.3":
-  version "7.5.5"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-class-properties/-/plugin-proposal-class-properties-7.5.5.tgz#a974cfae1e37c3110e71f3c6a2e48b8e71958cd4"
-  integrity sha512-AF79FsnWFxjlaosgdi421vmYG6/jg79bVD0dpD44QdgobzHKuLZ6S3vl8la9qIeSwGi8i1fS0O1mfuDAAdo1/A==
+  version "7.7.4"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-class-properties/-/plugin-proposal-class-properties-7.7.4.tgz#2f964f0cb18b948450362742e33e15211e77c2ba"
+  integrity sha512-EcuXeV4Hv1X3+Q1TsuOmyyxeTRiSqurGJ26+I/FW1WbymmRRapVORm6x1Zl3iDIHyRxEs+VXWp6qnlcfcJSbbw==
   dependencies:
-    "@babel/helper-create-class-features-plugin" "^7.5.5"
+    "@babel/helper-create-class-features-plugin" "^7.7.4"
     "@babel/helper-plugin-utils" "^7.0.0"
 
 "@babel/plugin-proposal-dynamic-import@^7.5.0":