Update traefik Docker tag to v2.4.9

This MR contains the following updates:

Package	Update	Change
traefik	patch	v2.4.8 -> v2.4.9

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Release Notes

containous/traefik

v2.4.9

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Bug fixes:

• [acme] Update go-acme/lego to v4.4.0 (#​8179 by ldez)
• [acme] Fix: ACME preferred chain. (#​8146 by ldez)
• [k8s,k8s/gatewayapi] Remove error when HTTProutes is empty (#​8023 by tomMoulard)
• [k8s,k8s/ingress] Fix incorrect behaviour with multi-port endpoint subsets (#​8156 by coufalja)
• [k8s,k8s/ingress] Kubernetes ingress provider to search via all endpoints (#​7997 by martinvizvary)
• [plugins,windows] Fix plugin unzip call on windows (#​8136 by ddtmachado)
• [plugins] Update Yaegi to v0.9.17 (#​8100 by ldez)
• [provider] Bump paerser to v0.1.4 (#​8116 by ldez)
• [server] Create buffered signals channel (#​8190 by dtomcej)
• [server] Fix: use defaultEntryPoints when no entryPoint is defined in a TCMRouter (#​8111 by LandryBe)
• [tls] Use a dynamic buffer to handle client Hello SNI detection (#​8194 by ldez)
• [tracing] Error span on 5xx only (#​8033 by kevtainer)

Documentation:

• [k8s,k8s/crd] Fix ingressRouteTCP external name service examples in documentation (#​8120 by rtribotte)
• [k8s,k8s/gatewayapi] Fix Kubernetes Gateway API documentation links (#​8063 by jbdoumenjou)
• [k8s,k8s/gatewayapi] Fix: k8s gateway api link (#​8085 by tomMoulard)
• [k8s,k8s/gatewayapi] Fix the &#​34;values&#​34; field in the example of httproute (#​8192 by maelvls)
• [k8s/crd] Fix ServersTransport documentation (#​8019 by tomMoulard)
• [k8s] Correct annotation option (#​8031 by cbergmann)
• [metrics] Add metrics documentation (#​8007 by rtribotte)
• [middleware] Docs: add examples for removing headers (#​8030 by SuperSandro2000)
• [middleware] Doc: clarify usage for ratelimit&#​39;s excludedIPs (#​8072 by mpl)
• [middleware] Elaborate on possible use of status codes with the errors middleware (#​8176 by Midnighter)
• [middleware] Doc: fix a syntax error in ratelimit TOML configuration sample (#​8101 by mvertes)
• [pilot] Docs: add pilot dashboard flag to static configuration file reference (#​8152 by danshilm)
• Adding Maintainers Guidelines (#​8168 by jakubhajek)
• Explains Traefik HTTP response status codes (#​8170 by rtribotte)
• Doc: typo fix (#​8026 by mpl)
• Adding formatting to the document. (#​8180 by jakubhajek)
• Changing default file format for the snippets from TOML to YAML (#​8193 by tomMoulard)

v2.4.9

Compare Source

All Commits

Bug fixes:

• [acme] Update go-acme/lego to v4.4.0 (#​8179 by ldez)
• [acme] Fix: ACME preferred chain. (#​8146 by ldez)
• [k8s,k8s/gatewayapi] Remove error when HTTProutes is empty (#​8023 by tomMoulard)
• [k8s,k8s/ingress] Fix incorrect behaviour with multi-port endpoint subsets (#​8156 by coufalja)
• [k8s,k8s/ingress] Kubernetes ingress provider to search via all endpoints (#​7997 by martinvizvary)
• [plugins,windows] Fix plugin unzip call on windows (#​8136 by ddtmachado)
• [plugins] Update Yaegi to v0.9.17 (#​8100 by ldez)
• [provider] Bump paerser to v0.1.4 (#​8116 by ldez)
• [server] Create buffered signals channel (#​8190 by dtomcej)
• [server] Fix: use defaultEntryPoints when no entryPoint is defined in a TCMRouter (#​8111 by LandryBe)
• [tls] Use a dynamic buffer to handle client Hello SNI detection (#​8194 by ldez)
• [tracing] Error span on 5xx only (#​8033 by kevtainer)

Documentation:

• [k8s,k8s/crd] Fix ingressRouteTCP external name service examples in documentation (#​8120 by rtribotte)
• [k8s,k8s/gatewayapi] Fix Kubernetes Gateway API documentation links (#​8063 by jbdoumenjou)
• [k8s,k8s/gatewayapi] Fix: k8s gateway api link (#​8085 by tomMoulard)
• [k8s,k8s/gatewayapi] Fix the &#​34;values&#​34; field in the example of httproute (#​8192 by maelvls)
• [k8s/crd] Fix ServersTransport documentation (#​8019 by tomMoulard)
• [k8s] Correct annotation option (#​8031 by cbergmann)
• [metrics] Add metrics documentation (#​8007 by rtribotte)
• [middleware] Docs: add examples for removing headers (#​8030 by SuperSandro2000)
• [middleware] Doc: clarify usage for ratelimit&#​39;s excludedIPs (#​8072 by mpl)
• [middleware] Elaborate on possible use of status codes with the errors middleware (#​8176 by Midnighter)
• [middleware] Doc: fix a syntax error in ratelimit TOML configuration sample (#​8101 by mvertes)
• [pilot] Docs: add pilot dashboard flag to static configuration file reference (#​8152 by danshilm)
• Adding Maintainers Guidelines (#​8168 by jakubhajek)
• Explains Traefik HTTP response status codes (#​8170 by rtribotte)
• Doc: typo fix (#​8026 by mpl)
• Adding formatting to the document. (#​8180 by jakubhajek)
• Changing default file format for the snippets from TOML to YAML (#​8193 by tomMoulard)

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