chore: Add flyway postgres dependency

Author: clepski

app/pom.xml

@@ -97,6 +97,10 @@ SPDX-License-Identifier: Apache-2.0
             <groupId>io.quarkus</groupId>
             <artifactId>quarkus-flyway</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.flywaydb</groupId>
+            <artifactId>flyway-database-postgresql</artifactId>
+        </dependency>
         <dependency>
             <groupId>io.quarkus</groupId>
             <artifactId>quarkus-jdbc-postgresql</artifactId>