Update traefik Docker tag to v2.11.2

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
traefik	patch	2.11.1 -> 2.11.2

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Release Notes

containous/traefik (traefik)

### [`v2.11.2`](https://togithub.com/traefik/traefik/releases/tag/v2.11.2) [Compare Source](https://togithub.com/containous/traefik/compare/v2.11.2...v2.11.2) **IMPORTANT**: Please read the [Migration Guide](https://doc.traefik.io/traefik/migration/v2/#v2112). **Bug fixes:** - **\[server]** Revert LingeringTimeout and change default value for ReadTimeout ([#​10599](https://togithub.com/traefik/traefik/pull/10599) by [kevinpollet](https://togithub.com/kevinpollet)) - **\[server]** Set default ReadTimeout value to 60s ([#​10602](https://togithub.com/traefik/traefik/pull/10602) by [rtribotte](https://togithub.com/rtribotte)) ### [`v2.11.2`](https://togithub.com/traefik/traefik/releases/tag/v2.11.2) [Compare Source](https://togithub.com/containous/traefik/compare/v2.11.1...v2.11.2) **IMPORTANT**: Please read the [Migration Guide](https://doc.traefik.io/traefik/migration/v2/#v2112). **Bug fixes:** - **\[server]** Revert LingeringTimeout and change default value for ReadTimeout ([#​10599](https://togithub.com/traefik/traefik/pull/10599) by [kevinpollet](https://togithub.com/kevinpollet)) - **\[server]** Set default ReadTimeout value to 60s ([#​10602](https://togithub.com/traefik/traefik/pull/10602) by [rtribotte](https://togithub.com/rtribotte))

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