Since 4f783f10f added validation for `volumesnapshotclasses`, the
`snapshot-validation-webhook` needs to handle this kind of resource. But
version 5.0.1 doesn't, which leads to failures when updating or creating
`volumesnapshotclasses`.
This commit updates the `snapshot-validation-webhook` version to 6.0.1 in
`deploy/kubernetes/webhook-example/admission-configuration-template`.
Signed-off-by: Benoît Knecht <bknecht@protonmail.ch>
c39d717cbc