update postcss and deps (#2203)

* update postcss and deps

* lock down bsb-js to 1.0.2 to fix node v6

* Update package.json

packages/core/parcel-bundler/package.json

@@ -53,8 +53,8 @@
     "node-forge": "^0.7.1",
     "node-libs-browser": "^2.0.0",
     "opn": "^5.1.0",
-    "postcss": "^6.0.19",
-    "postcss-value-parser": "^3.3.0",
+    "postcss": "^7.0.5",
+    "postcss-value-parser": "^3.3.1",
     "posthtml": "^0.11.2",
     "posthtml-parser": "^0.4.0",
     "posthtml-render": "^1.1.3",
@@ -84,7 +84,7 @@
     "babel-core": "^6.26.3",
     "babel-preset-env": "^1.7.0",
     "babylon": "^6.18.0",
-    "bsb-js": "^1.0.1",
+    "bsb-js": "1.0.2",
     "codecov": "^3.0.0",
     "coffeescript": "^2.0.3",
     "cross-env": "^5.1.1",
@@ -102,7 +102,7 @@
     "nib": "^1.1.2",
     "node-elm-compiler": "^5.0.1",
     "nyc": "^11.1.0",
-    "postcss-modules": "^1.1.0",
+    "postcss-modules": "^1.4.1",
     "posthtml-extend": "^0.2.1",
     "posthtml-include": "^1.1.0",
     "prettier": "^1.13.0",