chore: update to AngularJS 1.7.8 for docs (#11783)

Author: Splaktar

config/build.config.js

@@ -1,7 +1,7 @@
 const pkg = require('../package.json');
 
 module.exports = {
-  ngVersion: '1.7.7',
+  ngVersion: '1.7.8',
   version: pkg.version,
   repository: pkg.repository.url
     .replace(/^git/,'https')

package-lock.json

@@ -119,4 +119,4 @@
     "node": ">=8 <12",
     "npm": ">=5"
   }
-}
+}