chore(deps): update traefik docker tag to v2.5.5

This MR contains the following updates:

Package	Update	Change
traefik	patch	2.5.4 -> v2.5.5

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Release Notes

containous/traefik

v2.5.5

Compare Source

Bug fixes:

• [acme] Update go-acme/lego to v4.5.3 (#​8607 by lippertmarkus)
• [k8s/crd,k8s] fix: propagate source criterion config to RateLimit middleware in Kubernetes CRD (#​8591 by rbailly-talend)
• [plugins] plugins: start the go routine before calling Provide (#​8620 by ldez)
• [plugins] Update yaegi to v0.11.1 (#​8600 by tomMoulard)
• [plugins] Update yaegi v0.11.0 (#​8564 by ldez)
• [udp] fix: increase UDP read buffer length to max datagram size (#​8560 by kevinpollet)

Documentation:

• [consul] docs: removing typo in consul-catalog provider doc (#​8603 by tomMoulard)
• [metrics] docs: remove misleading metrics overview configuration (#​8579 by gsilvapt)
• [middleware] docs: align docker configuration example notes in basicauth HTTP middleware (#​8615 by tomMoulard)
• [service] docs: health check use readiness probe in k8s (#​8575 by Vampouille)
• [tls] docs: uniformize client TLS config documentation (#​8602 by kevinpollet)
• Update CODE_OF_CONDUCT.md (#​8619 by tfny)
• fixed minor spelling error in Regexp Syntax section (#​8565 by kerrsmith)

v2.5.5

Compare Source

Bug fixes:

• [acme] Update go-acme/lego to v4.5.3 (#​8607 by lippertmarkus)
• [k8s/crd,k8s] fix: propagate source criterion config to RateLimit middleware in Kubernetes CRD (#​8591 by rbailly-talend)
• [plugins] plugins: start the go routine before calling Provide (#​8620 by ldez)
• [plugins] Update yaegi to v0.11.1 (#​8600 by tomMoulard)
• [plugins] Update yaegi v0.11.0 (#​8564 by ldez)
• [udp] fix: increase UDP read buffer length to max datagram size (#​8560 by kevinpollet)

Documentation:

• [consul] docs: removing typo in consul-catalog provider doc (#​8603 by tomMoulard)
• [metrics] docs: remove misleading metrics overview configuration (#​8579 by gsilvapt)
• [middleware] docs: align docker configuration example notes in basicauth HTTP middleware (#​8615 by tomMoulard)
• [service] docs: health check use readiness probe in k8s (#​8575 by Vampouille)
• [tls] docs: uniformize client TLS config documentation (#​8602 by kevinpollet)
• Update CODE_OF_CONDUCT.md (#​8619 by tfny)
• fixed minor spelling error in Regexp Syntax section (#​8565 by kerrsmith)

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