Update packages

Author: jonathantneal

package.json

@@ -26,21 +26,21 @@
     "node": ">=4.0.0"
   },
   "dependencies": {
-    "@csstools/convert-colors": "^1.4",
-    "postcss": "^6.0",
-    "postcss-values-parser": "^1.3"
+    "@csstools/convert-colors": "^1.4.0",
+    "postcss": "^6.0.19",
+    "postcss-values-parser": "^1.3.2"
   },
   "devDependencies": {
-    "babel-core": "^6.26",
-    "babel-eslint": "^8.2",
-    "babel-preset-env": "^1.6",
-    "echint": "^4.0",
-    "eslint": "^4.18",
-    "eslint-config-dev": "2.0",
-    "postcss-tape": "2.2",
-    "pre-commit": "^1.2",
-    "rollup": "^0.56",
-    "rollup-plugin-babel": "^3.0"
+    "babel-core": "^6.26.0",
+    "babel-eslint": "^8.2.2",
+    "babel-preset-env": "^1.6.1",
+    "echint": "^4.0.1",
+    "eslint": "^4.18.1",
+    "eslint-config-dev": "^2.0.0",
+    "postcss-tape": "^2.2.0",
+    "pre-commit": "^1.2.2",
+    "rollup": "^0.56.3",
+    "rollup-plugin-babel": "^3.0.3"
   },
   "eslintConfig": {
     "extends": "dev",