chore(deps): update traefik docker tag to v2.9.6

This MR contains the following updates:

Package	Update	Change
traefik	patch	v2.9.1 -> v2.9.6

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Release Notes

containous/traefik

v2.9.6

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Bug fixes:

• [acme] Update go-acme/lego to v4.9.1 (#​9550 by ldez)
• [k8s/crd] Support of allowEmptyServices in TraefikService (#​9424 by jeromeguiard)
• [logs] Remove logs of the request (#​9574 by ldez)
• [plugins] Increase the timeout on plugin download (#​9529 by ldez)
• [server] Update golang.org/x/net (#​9582 by ldez)
• [tls] Handle broken TLS conf better (#​9572 by mpl)
• [tracing] Update DataDog tracing dependency to v1.43.1 (#​9526 by rtribotte)
• [webui] Add missing serialNumber passTLSClientCert option to middleware panel (#​9539 by rtribotte)

Documentation:

• [docker] Add networking example (#​9542 by Janik-Haag)
• [hub] Add information about the Hub Agent (#​9560 by nmengin)
• [k8s/helm] Update Helm installation section (#​9564 by mloiseleur)
• [middleware] Clarify PathPrefix matcher greediness (#​9519 by mpl)

v2.9.6

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Bug fixes:

• [acme] Update go-acme/lego to v4.9.1 (#​9550 by ldez)
• [k8s/crd] Support of allowEmptyServices in TraefikService (#​9424 by jeromeguiard)
• [logs] Remove logs of the request (#​9574 by ldez)
• [plugins] Increase the timeout on plugin download (#​9529 by ldez)
• [server] Update golang.org/x/net (#​9582 by ldez)
• [tls] Handle broken TLS conf better (#​9572 by mpl)
• [tracing] Update DataDog tracing dependency to v1.43.1 (#​9526 by rtribotte)
• [webui] Add missing serialNumber passTLSClientCert option to middleware panel (#​9539 by rtribotte)

Documentation:

• [docker] Add networking example (#​9542 by Janik-Haag)
• [hub] Add information about the Hub Agent (#​9560 by nmengin)
• [k8s/helm] Update Helm installation section (#​9564 by mloiseleur)
• [middleware] Clarify PathPrefix matcher greediness (#​9519 by mpl)

v2.9.5

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Bug fixes:

• [logs,middleware] Create a new capture instance for each incoming request (#​9510 by sdelicata)

Documentation:

• [k8s/helm] Update helm repository (#​9506 by charlie-haley)
• Enhance wording of building-testing page (#​9509 by svx)
• Add link descriptions and update wording (#​9507 by svx)
• Removes the experimental tag on the Traefik Hub header (#​9498 by tfny)

v2.9.5

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Bug fixes:

• [logs,middleware] Create a new capture instance for each incoming request (#​9510 by sdelicata)

Documentation:

• [k8s/helm] Update helm repository (#​9506 by charlie-haley)
• Enhance wording of building-testing page (#​9509 by svx)
• Add link descriptions and update wording (#​9507 by svx)
• Removes the experimental tag on the Traefik Hub header (#​9498 by tfny)

v2.9.4

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Bug fixes:

• [acme] Update go-acme/lego to v4.9.0 (#​9413 by tony-defa)
• [kv,redis] Fix Redis configuration type (#​9435 by ldez)
• [logs,middleware,metrics] Handle capture on redefined http.responseWriters (#​9440 by rtribotte)
• [middleware,k8s] Remove raw cert escape in PassTLSClientCert middleware (#​9412 by rtribotte)
• [plugins] Update Yaegi to v0.14.3 (#​9468 by ldez)
• Remove side effect on default transport tests (#​9460 by sdelicata)

Documentation:

• [k8s] Fix links to gateway API guides (#​9445 by kevinpollet)
• Simplify dashboard rule example (#​9454 by sosoba)
• Add v2.9 to release page (#​9438 by kevinpollet)

v2.9.4

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Bug fixes:

• [acme] Update go-acme/lego to v4.9.0 (#​9413 by tony-defa)
• [kv,redis] Fix Redis configuration type (#​9435 by ldez)
• [logs,middleware,metrics] Handle capture on redefined http.responseWriters (#​9440 by rtribotte)
• [middleware,k8s] Remove raw cert escape in PassTLSClientCert middleware (#​9412 by rtribotte)
• [plugins] Update Yaegi to v0.14.3 (#​9468 by ldez)
• Remove side effect on default transport tests (#​9460 by sdelicata)

Documentation:

• [k8s] Fix links to gateway API guides (#​9445 by kevinpollet)
• Simplify dashboard rule example (#​9454 by sosoba)
• Add v2.9 to release page (#​9438 by kevinpollet)

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