Update traefik Docker tag to v1.7.34

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
traefik	patch	v1.7.33-alpine -> v1.7.34-alpine

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Release Notes

containous/traefik

### [`v1.7.34`](https://togithub.com/traefik/traefik/releases/tag/v1.7.34) [Compare Source](https://togithub.com/containous/traefik/compare/v1.7.34...v1.7.34) **Bug fixes:** - **\[k8s]** require that secret is a valid PEM ([#​8624](https://togithub.com/traefik/traefik/pull/8624) by [jr0d](https://togithub.com/jr0d)) ### [`v1.7.34`](https://togithub.com/traefik/traefik/releases/tag/v1.7.34) [Compare Source](https://togithub.com/containous/traefik/compare/v1.7.33...v1.7.34) **Bug fixes:** - **\[k8s]** require that secret is a valid PEM ([#​8624](https://togithub.com/traefik/traefik/pull/8624) by [jr0d](https://togithub.com/jr0d))

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