Update babel to latest version

We are updating babel. Newer versions of jest are depending on newer
versions of jest. By updating babel independently, we can make it easier
to upgrade jest (smaller diff in dependencies) and easier to revert in
the unlikely case of a failure.

package.json

@@ -33,12 +33,12 @@
     "webpack-prod": "NODE_OPTIONS=\"--max-old-space-size=3584\" NODE_ENV=production webpack --config config/webpack.config.js"
   },
   "dependencies": {
-    "@babel/core": "^7.8.4",
-    "@babel/plugin-proposal-class-properties": "^7.8.3",
-    "@babel/plugin-proposal-json-strings": "^7.8.3",
-    "@babel/plugin-proposal-private-methods": "^7.8.3",
-    "@babel/plugin-syntax-import-meta": "^7.8.3",
-    "@babel/preset-env": "^7.8.4",
+    "@babel/core": "^7.10.1",
+    "@babel/plugin-proposal-class-properties": "^7.10.1",
+    "@babel/plugin-proposal-json-strings": "^7.10.1",
+    "@babel/plugin-proposal-private-methods": "^7.10.1",
+    "@babel/plugin-syntax-import-meta": "^7.10.1",
+    "@babel/preset-env": "^7.10.1",
     "@gitlab/at.js": "1.5.5",
     "@gitlab/svgs": "1.138.0",
     "@gitlab/ui": "16.6.0",
@@ -155,7 +155,7 @@
     "xterm": "^3.5.0"
   },
   "devDependencies": {
-    "@babel/plugin-transform-modules-commonjs": "^7.8.3",
+    "@babel/plugin-transform-modules-commonjs": "^7.10.1",
     "@gitlab/eslint-plugin": "3.1.0",
     "@vue/test-utils": "^1.0.0-beta.30",
     "axios-mock-adapter": "^1.15.0",