happa release v1.57.6

Mar 2, 2023 Web UI happa v1.57.6

Changes

Custom control for instance type selection added by @gusevda in https://github.com/giantswarm/happa/pull/4120

Full Changelog: https://github.com/giantswarm/happa/compare/v1.57.5...v1.57.6

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