fix: update normalize.css to version ^8.0.0 (#70)

Author: renovate[bot]

package.json

@@ -25,7 +25,7 @@
     "@angular/router": "^5.0.0",
     "core-js": "^2.4.1",
     "milligram": "^1.3.0",
-    "normalize.css": "^7.0.0",
+    "normalize.css": "^8.0.0",
     "rxjs": "^5.4.2",
     "zone.js": "^0.8.14"
   },

yarn.lock

@@ -4289,9 +4289,9 @@ normalize-url@^1.4.0:
     query-string "^4.1.0"
     sort-keys "^1.0.0"
 
-normalize.css@^7.0.0:
-  version "7.0.0"
-  resolved "https://registry.yarnpkg.com/normalize.css/-/normalize.css-7.0.0.tgz#abfb1dd82470674e0322b53ceb1aaf412938e4bf"
+normalize.css@^8.0.0:
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/normalize.css/-/normalize.css-8.0.0.tgz#14ac5e461612538a4ce9be90a7da23f86e718493"
 
 normalize.css@~5.0.0:
   version "5.0.0"