Bump ruby from 2.7.1-slim-buster to 2.7.2-slim-buster
Bump ruby from 2.7.1-slim-buster to 2.7.2-slim-buster

Bumps ruby from 2.7.1-slim-buster to 2.7.2-slim-buster.

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
genebean/tree-planter,genebean/tree-planter