Update dependency testem to v3.0.3

package.json

@@ -126,7 +126,7 @@
     "pretender": "3.4.0",
     "reframe.js": "2.2.7",
     "simplemde": "https://github.com/kevinansfield/simplemde-markdown-editor.git#ghost",
-    "testem": "3.0.2",
+    "testem": "3.0.3",
     "top-gh-contribs": "2.0.4",
     "validator": "7.2.0",
     "walk-sync": "2.0.2"

yarn.lock

@@ -12641,7 +12641,42 @@ terser@^4.1.2, terser@^4.3.9:
     source-map "~0.6.1"
     source-map-support "~0.5.12"
 
-testem@3.0.2, testem@^3.0.1:
+testem@3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/testem/-/testem-3.0.3.tgz#d59f1ffbcf497909aca5580b0496e6506350d7b8"
+  integrity sha512-mdBCCn8LlTmgFDpexemyGP4cjO1V0VASs/qbPGZk8Qo05EBnmch29LIqxvWUDih/nA6eau3reXp0rNEef7qpCw==
+  dependencies:
+    backbone "^1.1.2"
+    bluebird "^3.4.6"
+    charm "^1.0.0"
+    commander "^2.6.0"
+    compression "^1.7.4"
+    consolidate "^0.15.1"
+    execa "^1.0.0"
+    express "^4.10.7"
+    fireworm "^0.7.0"
+    glob "^7.0.4"
+    http-proxy "^1.13.1"
+    js-yaml "^3.2.5"
+    lodash.assignin "^4.1.0"
+    lodash.castarray "^4.4.0"
+    lodash.clonedeep "^4.4.1"
+    lodash.find "^4.5.1"
+    lodash.uniqby "^4.7.0"
+    mkdirp "^0.5.1"
+    mustache "^3.0.0"
+    node-notifier "^5.0.1"
+    npmlog "^4.0.0"
+    printf "^0.5.1"
+    rimraf "^2.4.4"
+    socket.io "^2.1.0"
+    spawn-args "^0.2.0"
+    styled_string "0.0.1"
+    tap-parser "^7.0.0"
+    tmp "0.0.33"
+    xmldom "^0.1.19"
+
+testem@^3.0.1:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/testem/-/testem-3.0.2.tgz#9100d09e73c3271e5201a141dbd3f0d31e71add2"
   integrity sha512-mUcPL7MZtmg3UUkOe6sIFXoY1ysv06qxQ7VEKnAHIAiKbf21DOdAJzVqR9YsOZcvennP9gKAUbL/607z9RQt/g==