chore(deps): update grafana/agent docker tag to v0.43.4 (main)

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
grafana/agent	patch	v0.43.3 -> v0.43.4

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Release Notes

grafana/agent (grafana/agent)

### [`v0.43.4`](https://redirect.github.com/grafana/agent/blob/HEAD/CHANGELOG.md#v0434-2024-11-25) [Compare Source](https://redirect.github.com/grafana/agent/compare/v0.43.3...v0.43.4) ##### Other - Update to go 1.22.9 ([@​mattdurham](https://redirect.github.com/mattdurham))

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