Update dependencies

Author: jonathantneal

package.json

@@ -26,19 +26,19 @@
   },
   "dependencies": {
     "@csstools/convert-colors": "^1.4.0",
-    "postcss": "^6.0.22",
+    "postcss": "^6.0.23",
     "postcss-values-parser": "^1.5.0"
   },
   "devDependencies": {
     "babel-core": "^6.26.3",
-    "babel-eslint": "^8.2.3",
+    "babel-eslint": "^8.2.6",
     "babel-preset-env": "^1.7.0",
-    "eslint": "^4.19.1",
+    "eslint": "^5.2.0",
     "eslint-config-dev": "^2.0.0",
     "postcss-tape": "^2.2.0",
     "pre-commit": "^1.2.2",
-    "rollup": "^0.58.2",
-    "rollup-plugin-babel": "^3.0.4"
+    "rollup": "^0.63.4",
+    "rollup-plugin-babel": "^3.0.7"
   },
   "eslintConfig": {
     "extends": "dev",