[dev-v2.11] Bump rancher-webhook to v0.7.0-rc.6

[rancher-pr-and-push-webhook]

Release note for v0.7.0-rc.6

What's Changed

• feat(setting): add validation for auth-user-session-idle-ttl-minutes by @alegrey91 in feat(setting): add validation for auth-user-session-idle-ttl-minutes webhook#510
• Remove golang.org/x/exp by @rohitsakala in Remove golang.org/x/exp webhook#705
• Prevent deletion of namespaces and cluster by @dharmit in Prevent deletion of namespaces and cluster webhook#651
• Fix validation. by @bigkevmcd in Fix validation. webhook#666
• Validate LDAP/AD authconfigs by @pmatseykanets in Validate LDAP/AD authconfigs webhook#682

New Contributors

• @alegrey91 made their first contribution in feat(setting): add validation for auth-user-session-idle-ttl-minutes webhook#510
• @bigkevmcd made their first contribution in Fix validation. webhook#666

Full Changelog: rancher/webhook@v0.7.0-rc.5...v0.7.0-rc.6

Useful links

• Commit comparison: rancher/webhook@v0.7.0-rc.5...v0.7.0-rc.6
• Release v0.7.0-rc.5: https://github.com/rancher/webhook/releases/tag/v0.7.0-rc.5

About this PR

The workflow was triggered by crobby.

[github-actions]

Validation steps

• Ensure all container images have repository and tag on the same level to ensure that all container images are included in rancher-images.txt which are used by airgap customers.

  Ex:-
    longhorn-controller:
      repository: rancher/hardened-sriov-cni
      tag: v2.6.3-build20230913
  

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