ci: update before_script section

update angular cli to current v

Author: oauthentik

.travis.yml

@@ -12,7 +12,7 @@ cache:
   directories:
     - $HOME/.npm
 before_install:
-  - npm i -g @angular/cli@7.0.5
+  - npm i -g @angular/cli@9.1.4
   - npm install codecov -g
 install:
   - npm rebuild node-sass