⬆️ Update Alpine base image to v3.20.2

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
amd64/alpine	patch	3.20.1 -> 3.20.2
arm32v6/alpine	patch	3.20.1 -> 3.20.2
arm32v7/alpine	patch	3.20.1 -> 3.20.2
arm64v8/alpine	patch	3.20.1 -> 3.20.2
i386/alpine	patch	3.20.1 -> 3.20.2

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