Regression: `process-postgresql` examples are no more working due to flyway migration

Commit: https://github.com/kiegroup/kogito-examples/commit/3029823a98c045cd634b086e7466f03fc0de992f#diff-c5d02a8f7908812ea15d8507528f523b356a57d34a810e6f95a8a3c6ac2c3cebR8-R10

On Quarkus, `quarkus.datasource.jdbc.url` is now mandatory whereas it was not previous, we could set directly `quarkus.datasource.reactive.url`

On Spring Boot, `kogito.persistence.postgresql.connection.uri` is not taken into account anymore. We need to define also those properties:

• spring.datasource.url
• spring.datasource.username
• spring.datasource.password