build: bump ts-jest from 22.4.1 to 22.4.2 in /packages/extension

Bumps [ts-jest](https://github.com/kulshekhar/ts-jest) from 22.4.1 to 22.4.2.
- [Release notes](https://github.com/kulshekhar/ts-jest/releases)
- [Changelog](https://github.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md)
- [Commits](kulshekhar/ts-jest@v22.4.1...v22.4.2)

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

packages/extension/package.json

@@ -39,7 +39,7 @@
     "mock-socket": "^7.1.0",
     "node-sass": "^4.7.2",
     "sass-loader": "^6.0.7",
-    "ts-jest": "^22.4.1",
+    "ts-jest": "^22.4.2",
     "ts-loader": "^4.0.1",
     "typescript": "^2.7.2",
     "vue-loader": "^14.2.1",

packages/extension/yarn.lock

@@ -803,7 +803,7 @@ babel-code-frame@^6.26.0:
     esutils "^2.0.2"
     js-tokens "^3.0.2"
 
-babel-core@^6.0.0, babel-core@^6.24.1, babel-core@^6.26.0:
+babel-core@^6.0.0, babel-core@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-6.26.0.tgz#af32f78b31a6fcef119c87b0fd8d9753f03a0bb8"
   dependencies:
@@ -1164,7 +1164,7 @@ babel-plugin-transform-es2015-modules-amd@^6.24.1:
     babel-runtime "^6.22.0"
     babel-template "^6.24.1"
 
-babel-plugin-transform-es2015-modules-commonjs@^6.24.1:
+babel-plugin-transform-es2015-modules-commonjs@^6.24.1, babel-plugin-transform-es2015-modules-commonjs@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-transform-es2015-modules-commonjs/-/babel-plugin-transform-es2015-modules-commonjs-6.26.0.tgz#0d8394029b7dc6abe1a97ef181e00758dd2e5d8a"
   dependencies:
@@ -4070,7 +4070,7 @@ jest-cli@^22.4.2:
     which "^1.2.12"
     yargs "^10.0.3"
 
-jest-config@^22.4.0, jest-config@^22.4.2:
+jest-config@^22.4.2:
   version "22.4.2"
   resolved "https://registry.yarnpkg.com/jest-config/-/jest-config-22.4.2.tgz#580ba5819bf81a5e48f4fd470e8b81834f45c855"
   dependencies:
@@ -7084,17 +7084,17 @@ trim-right@^1.0.1:
   dependencies:
     glob "^6.0.4"
 
-ts-jest@^22.4.1:
-  version "22.4.1"
-  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-22.4.1.tgz#69defb2042d689cff9b4244365ef638ecd35f706"
+ts-jest@^22.4.2:
+  version "22.4.2"
+  resolved "https://registry.yarnpkg.com/ts-jest/-/ts-jest-22.4.2.tgz#2137bc0899b14dfb1d58257ee10b18ab8a2d92c5"
   dependencies:
-    babel-core "^6.24.1"
+    babel-core "^6.26.0"
     babel-plugin-istanbul "^4.1.4"
-    babel-plugin-transform-es2015-modules-commonjs "^6.24.1"
+    babel-plugin-transform-es2015-modules-commonjs "^6.26.0"
     babel-preset-jest "^22.4.0"
     cpx "^1.5.0"
     fs-extra "4.0.3"
-    jest-config "^22.4.0"
+    jest-config "^22.4.2"
     pkg-dir "^2.0.0"
     yargs "^11.0.0"