How to update cordova platform android@6.2.3 to android@8.0.0?

Hello Ionic team,
I am using ionic1 cordova projects. In that projects i’m using cordova platform android@6.2.3.So,What are the Requirements need to update my **cordova platforms Android@8.0.0?** .

```
ionic info

cli packages: (C:\Windows\System32\node_modules)

** @ionic/cli-utils : 1.12.0**
** ionic (Ionic CLI) : 3.12.0**

global packages:

** cordova (Cordova CLI) : 7.0.1**

local packages:

** @ionic/app-scripts : 3.1.0**
** Cordova Platforms : android 6.2.3**
** Ionic Framework : ionic-angular 3.9.2**

System:

** Android SDK Tools : 26.1.1**
** Node : v8.11.3**
** npm : 6.1.0**
** OS : Windows 10**

Misc:

** backend : pro**
```
Please help me.

Thanks and Regards,
Krishna