Bump postgresql from 42.2.12 to 42.4.1 in /mdm-client#3

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dependabot/maven/mdm-client/org.postgresql-postgresql-42.4.1hexenwerk-starterprojects/starter_microservice_stack_prototyper:dependabot/maven/mdm-client/org.postgresql-postgresql-42.4.1Copy head branch name to clipboard