Update kubeflow/kfp-tekton manifests from v2.0.3

[yhwang]

Description of your changes:
To align with kfp 2.0.3, also update kfp-tekton to 2.0.3

Checklist:

• Unit tests pass:
  Make sure you have installed kustomize == 3.2.1
  1. make generate-changed-only
  2. make test

[Tomcli]

/lgtm

[yhwang]

/assign @kimwnasptd @PatrickXYS

[yhwang]

@danisla, want to make sure this could be included in the final release. Do you know who could approve this before you cut the release?

[DnPlas]

hey @yhwang this will be included in the upcoming release. we just need @kimwnasptd's approval.

[yhwang]

hey @yhwang this will be included in the upcoming release. we just need @kimwnasptd's approval.

Thanks for the confirmation.
The reason I want to double-check with you is that we already put kfp-tekton 2.0.3 in the release blog post. So I want to make sure this will be included in the v1.8.

[kimwnasptd]

/lgtm
/approve

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

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