Update Tekton to latest version

[ssmiller25]

Updating Tekton to the latest version. Addresses #520

Thank you for wanting to submit a Pull Request to the Civo Kubernetes Marketplace repository!

If your pull request concerns an existing Marketplace application, please make sure you have:

• Notified the Maintainer of the application in this pull request so that they are aware of your proposal. - myself
• Outlined the changes you are proposing, and the reasons these are required (e.g. stability, compatibility with new versions of Kubernetes implementations, etc).
• Tested that the application works with the proposed updates applied (including a screenshot). - No updated screenshots necessary
• Updated the version number of the app if that has changed.

[saiyam1814]

LGTM