deps: update dependency org.postgresql:postgresql to v42.7.5#1894

gcf-merge-on-green[bot] merged 1 commit intogoogleapis:maingoogleapis/java-spanner-jdbc:mainfrom

renovate-bot:renovate/org.postgresql-postgresql-42.xrenovate-bot/java-spanner-jdbc:renovate/org.postgresql-postgresql-42.xCopy head branch name to clipboard