fix(package): update ngx-clipboard to version 12.3.0

Closes #14

Author: greenkeeper[bot]

demo/package.json

@@ -51,7 +51,7 @@
     "highlight.js": "^9.15.6",
     "include-media": "^1.4.9",
     "material-design-icons": "^3.0.1",
-    "ngx-clipboard": "^11.1.9",
+    "ngx-clipboard": "^12.3.0",
     "ngx-highlightjs": "^3.0.0",
     "ngx-material-pages": "^1.3.2",
     "rxjs": "6.4.0",