chore(deps): update traefik docker tag to v2.9.9

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
traefik	patch	v2.9.8 -> v2.9.9

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Release Notes

containous/traefik

### [`v2.9.9`](https://togithub.com/containous/traefik/blob/HEAD/CHANGELOG.md#v299-httpsgithubcomtraefiktraefiktreev299-2023-03-21) [Compare Source](https://togithub.com/containous/traefik/compare/v2.9.9...v2.9.9) [All Commits](https://togithub.com/traefik/traefik/compare/v2.9.8...v2.9.9) **Bug fixes:** - **\[acme]** Update go-acme/lego to v4.10.2 ([#​9749](https://togithub.com/traefik/traefik/pull/9749) by [ldez](https://togithub.com/ldez)) - **\[http3]** Update quic-go to v0.33.0 ([#​9737](https://togithub.com/traefik/traefik/pull/9737) by [ldez](https://togithub.com/ldez)) - **\[metrics]** Include user-defined default cert for traefik_tls_certs_not_after metric ([#​9742](https://togithub.com/traefik/traefik/pull/9742) by [rtribotte](https://togithub.com/rtribotte)) - **\[middleware]** Update vulcand/oxy to [`a0e9f7f`](https://togithub.com/containous/traefik/commit/a0e9f7ff1040) ([#​9750](https://togithub.com/traefik/traefik/pull/9750) by [ldez](https://togithub.com/ldez)) - **\[nomad]** Fix default configuration settings for Nomad Provider ([#​9758](https://togithub.com/traefik/traefik/pull/9758) by [aofei](https://togithub.com/aofei)) - **\[nomad]** Fix Nomad client TLS defaults ([#​9795](https://togithub.com/traefik/traefik/pull/9795) by [rtribotte](https://togithub.com/rtribotte)) - **\[server]** Remove User-Agent header removal from ReverseProxy director func ([#​9752](https://togithub.com/traefik/traefik/pull/9752) by [rtribotte](https://togithub.com/rtribotte)) **Documentation:** - **\[middleware]** Clarify ratelimit middleware ([#​9777](https://togithub.com/traefik/traefik/pull/9777) by [mpl](https://togithub.com/mpl)) - **\[tcp]** Correcting variable name 'server address' in TCP Router ([#​9743](https://togithub.com/traefik/traefik/pull/9743) by [ralphg6](https://togithub.com/ralphg6)) ### [`v2.9.9`](https://togithub.com/containous/traefik/blob/HEAD/CHANGELOG.md#v299-httpsgithubcomtraefiktraefiktreev299-2023-03-21) [Compare Source](https://togithub.com/containous/traefik/compare/v2.9.8...v2.9.9) [All Commits](https://togithub.com/traefik/traefik/compare/v2.9.8...v2.9.9) **Bug fixes:** - **\[acme]** Update go-acme/lego to v4.10.2 ([#​9749](https://togithub.com/traefik/traefik/pull/9749) by [ldez](https://togithub.com/ldez)) - **\[http3]** Update quic-go to v0.33.0 ([#​9737](https://togithub.com/traefik/traefik/pull/9737) by [ldez](https://togithub.com/ldez)) - **\[metrics]** Include user-defined default cert for traefik_tls_certs_not_after metric ([#​9742](https://togithub.com/traefik/traefik/pull/9742) by [rtribotte](https://togithub.com/rtribotte)) - **\[middleware]** Update vulcand/oxy to [`a0e9f7f`](https://togithub.com/containous/traefik/commit/a0e9f7ff1040) ([#​9750](https://togithub.com/traefik/traefik/pull/9750) by [ldez](https://togithub.com/ldez)) - **\[nomad]** Fix default configuration settings for Nomad Provider ([#​9758](https://togithub.com/traefik/traefik/pull/9758) by [aofei](https://togithub.com/aofei)) - **\[nomad]** Fix Nomad client TLS defaults ([#​9795](https://togithub.com/traefik/traefik/pull/9795) by [rtribotte](https://togithub.com/rtribotte)) - **\[server]** Remove User-Agent header removal from ReverseProxy director func ([#​9752](https://togithub.com/traefik/traefik/pull/9752) by [rtribotte](https://togithub.com/rtribotte)) **Documentation:** - **\[middleware]** Clarify ratelimit middleware ([#​9777](https://togithub.com/traefik/traefik/pull/9777) by [mpl](https://togithub.com/mpl)) - **\[tcp]** Correcting variable name 'server address' in TCP Router ([#​9743](https://togithub.com/traefik/traefik/pull/9743) by [ralphg6](https://togithub.com/ralphg6))

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