Bump org.postgresql:postgresql from 42.7.11 to 42.7.12 in /guice/hibernate-testing - #52

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache@v4.2.2, actions/checkout@v2, actions/setup-java@v2, scacap/action-surefire-report@1a128e49c0585bc0b8e38e541ac3b6e35a5bc727, zcong1993/setup-timezone@f28e5fb1ca95077c81b67be53bcd1923de2175ed. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/