fix: api/pom.xml to reduce vulnerabilities (#125)

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGPOSTGRESQL-2390459

api/pom.xml

@@ -27,7 +27,7 @@
         <groovy.version>3.0.8</groovy.version>
         <azure-identity.version>1.3.7</azure-identity.version>
         <microsoft-graph.version>5.7.0</microsoft-graph.version>
-        <postgresql.version>42.2.23</postgresql.version>
+        <postgresql.version>42.2.25</postgresql.version>
         <mysql.version>8.0.28</mysql.version>
         <snakeyaml.version>1.29</snakeyaml.version>
         <quartz.version>2.3.2</quartz.version>