update cosign

[JimBugwadia]

Signed-off-by: Jim Bugwadia jim@nirmata.com

Related issue

Fixes #2266

Milestone of this PR

What type of PR is this

Proposed Changes

Updated Cosign to 1.1.0

Proof Manifests

Checklist

• I have read the contributing guidelines.
• [] I have added tests that prove my fix is effective or that my feature works.
• [] My PR contains new or altered behavior to Kyverno and
  • [] I have added or changed the documentation myself in an existing PR and the link is:
  • [] I have raised an issue in kyverno/website to track the doc update and the link is:
  • [] I have read the PR documentation guide and followed the process including adding proof manifests to this PR.

Further Comments