Update @actions/cache version to 1.0.8

[aparna-ravindra]

Description:
The action depends on @actions/cache. The latest version 1.0.8 is now available and it supports upto 10GB cache upload.

Justification:
Support 10GB cache upload using the latest version 1.0.8 of @actions/cache

Are you willing to submit a PR?
Yes

[dmitry-shibanov]

Hello @aparna-ravindra. Changes were merged.
For now I'm closing the issue. If you have any concerns feel free to ping us.

[aparna-ravindra]

Thank you, @dmitry-shibanov.