Bump flyway.version from 10.17.3 to 10.18.0 (#1385)

Bumps `flyway.version` from 10.17.3 to 10.18.0.

Updates `org.flywaydb:flyway-core` from 10.17.3 to 10.18.0
- [Release notes](https://github.com/flyway/flyway/releases)
- [Commits](flyway/flyway@flyway-10.17.3...flyway-10.18.0)

Updates `org.flywaydb:flyway-database-postgresql` from 10.17.3 to 10.18.0

---
updated-dependencies:
- dependency-name: org.flywaydb:flyway-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.flywaydb:flyway-database-postgresql
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

backend/pom.xml

@@ -22,7 +22,7 @@
         <sonar.kotlin.source.version>${kotlin.version}</sonar.kotlin.source.version>
 
         <spring.boot.version>3.3.1</spring.boot.version>
-        <flyway.version>10.17.3</flyway.version>
+        <flyway.version>10.18.0</flyway.version>
         <spring.modulith.version>1.2.3</spring.modulith.version>
         <jjwt.version>0.12.6</jjwt.version>
         <postgresql.driver.version>42.7.4</postgresql.driver.version>