chore(deps): update traefik docker tag to v2.6.1

This MR contains the following updates:

Package	Type	Update	Change
traefik	Kustomization	patch	v2.6.0 -> v2.6.1

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Release Notes

containous/traefik

v2.6.1

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Bug fixes:

• [acme] Add domain to HTTP challenge errors (#​8740 by ldez)
• [metrics] Fix metrics bucket key high cardinality (#​8761 by tomMoulard)
• [middleware,tls] Use CNAME for SNI check on host header (#​8773 by ldez)
• [middleware,tracing] Rename Datadog span tags (#​8323 by luckielordie)
• [tls] Apply the same approach as the rules system on the TLS configuration choice (#​8764 by ldez)

Documentation:

• [acme] Add Hurricane Electric to acme documentation (#​8746 by vladshub)
• [acme] Clarify that ACME challenge is mandatory (#​8739 by mpl)
• [http3] Explain a bit more around enabling HTTP3 (#​8731 by SantoDE)
• [metrics] Fix mixups in metrics documentation (#​8752 by tomMoulard)
• [middleware,k8s/crd] Fix Kubernetes TCP examples (#​8759 by sylr)

v2.6.1

Compare Source

All Commits

Bug fixes:

• [acme] Add domain to HTTP challenge errors (#​8740 by ldez)
• [metrics] Fix metrics bucket key high cardinality (#​8761 by tomMoulard)
• [middleware,tls] Use CNAME for SNI check on host header (#​8773 by ldez)
• [middleware,tracing] Rename Datadog span tags (#​8323 by luckielordie)
• [tls] Apply the same approach as the rules system on the TLS configuration choice (#​8764 by ldez)

Documentation:

• [acme] Add Hurricane Electric to acme documentation (#​8746 by vladshub)
• [acme] Clarify that ACME challenge is mandatory (#​8739 by mpl)
• [http3] Explain a bit more around enabling HTTP3 (#​8731 by SantoDE)
• [metrics] Fix mixups in metrics documentation (#​8752 by tomMoulard)
• [middleware,k8s/crd] Fix Kubernetes TCP examples (#​8759 by sylr)

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