Skipping the kubernetes-csi/external-snapshotter images to update

[varma-maryala]

Issue #, if available:

Description of changes:
Skipping to update the images. for mpvarma/update-checking-csi-snapshotter as this image is bumped but not published to the external repo.

Error updating image digests: ImageNotFoundException: The image with imageId {imageDigest:'null', imageTag:'v8.2.0-eks-1-29-30'} does not exist within the repository with name 'kubernetes-csi/external-snapshotter/snapshot-validation-webhook' in the registry with id '316434458148'

https://prow.eks.amazonaws.com/view/s3/prowdataclusterstack-316434458-prowbucket7c73355c-1n9f9v93wpjcm/logs/dev-release-1-29-postsubmit/1869869112969138176#2:build-container-build-log.txt%3A8080

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[varma-maryala]

/retest

[varma-maryala]

/approved
/unhold

[varma-maryala]

/approved

[vineeth-bandi]

/lgtm

[varma-maryala]

/approved

[eks-distro-bot]

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