Update dependency traefik to v2.7.0

This MR contains the following updates:

Package	Type	Update	Change
traefik	Kustomization	minor	v2.6.6 -> v2.7.0

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Release Notes

containous/traefik

v2.7.0

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Documentation:

• [hub] Fix Traefik Hub TLS documentation (#​8883 by jbdoumenjou)

Misc:

• Merge current v2.6 into v2.7 (#​8899 by rtribotte)

v2.7.0

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All Commits

Documentation:

• [hub] Fix Traefik Hub TLS documentation (#​8883 by jbdoumenjou)

Misc:

• Merge current v2.6 into v2.7 (#​8899 by rtribotte)

v2.6.7

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Bug fixes:

• [logs,k8s/crd] Fix log statement for ExternalName misconfig (#​9014 by kruton)
• [plugins] Update Yaegi to v0.12.0 (#​9039 by mpl)
• [tcp,service] Fix initial tcp lookup when address is not available (#​9021 by ddtmachado)
• [tls] Fix panic when getting certificates with non-existing store (#​9019 by moutoum)
• [tracing] Update jaeger-client-go to v2.30.0 (#​9000 by moutoum)

Documentation:

• [middleware] Updated browserXssFilter key to camel case (#​9038 by karlosmunjos)
• Fix the default priority for the entrypoint redirection (#​9028 by ldez)
• Fix typo in maintainers guidelines (#​9011 by eltociear)

v2.6.7

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Bug fixes:

• [logs,k8s/crd] Fix log statement for ExternalName misconfig (#​9014 by kruton)
• [plugins] Update Yaegi to v0.12.0 (#​9039 by mpl)
• [tcp,service] Fix initial tcp lookup when address is not available (#​9021 by ddtmachado)
• [tls] Fix panic when getting certificates with non-existing store (#​9019 by moutoum)
• [tracing] Update jaeger-client-go to v2.30.0 (#​9000 by moutoum)

Documentation:

• [middleware] Updated browserXssFilter key to camel case (#​9038 by karlosmunjos)
• Fix the default priority for the entrypoint redirection (#​9028 by ldez)
• Fix typo in maintainers guidelines (#​9011 by eltociear)

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