upgrade some devDeps

package.json

@@ -137,7 +137,7 @@
     "immutability-helper": "^2.5.0",
     "intersection-observer": "^0.5.0",
     "jest": "^23.2.0",
-    "jsdom": "^11.12.0",
+    "jsdom": "^12.0.0",
     "jsonml.js": "^0.1.0",
     "lint-staged": "^7.0.0",
     "lz-string": "^1.4.4",
@@ -172,7 +172,7 @@
     "reqwest": "^2.0.5",
     "rimraf": "^2.5.4",
     "scrollama": "^1.4.1",
-    "stylelint": "9.4.0",
+    "stylelint": "^9.5.0",
     "stylelint-config-standard": "^18.0.0",
     "typescript": "~3.0.1",
     "unified": "^7.0.0",