Update module github.com/traefik/traefik/v2 to v2.7.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/traefik/traefik/v2	require	minor	v2.6.3 -> v2.7.0

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Release Notes

traefik/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)

v2.6.7

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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)

v2.6.6

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Bug fixes:

• [acme] Fix RenewInterval computation in ACME provider (#​8969 by smasset-orange)
• [ecs,logs] Remove duplicate error logs (#​8916 by rtribotte)
• [ecs] Filter out ECS anywhere instance IDs (#​8973 by JohnPreston)
• [middleware] Re-add missing writeheader call in flush (#​8957 by mpl)
• [middleware] Fix bug for when custom page is large enough (#​8932 by mpl)
• [middleware] Fix regexp handling in redirect middleware (#​8920 by tomMoulard)
• [plugins] Update Yaegi to v0.11.3 (#​8954 by kevinpollet)

Documentation:

• [k8s/gatewayapi] Fix certificateRefs in dynamic configuration (#​8940 by kahirokunn)
• [logs] Move accessLog.fields example to TOML section (#​8944 by major)
• [logs] Add default mode for fields.names to access log (#​8933 by aleksvujic)
• [middleware] Fix default for buffering middleware (#​8945 by rtribotte)
• [middleware] Preflight requests are not forwarded to services (#​8923 by sizief)
• Add title and description metadata to documentation pages (#​8941 by ldez)
• Update dynamic and static configuration references (#​8918 by ldez)

v2.6.5

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v2.6.4

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