Bump org.flywaydb:flyway-core from 9.22.2 to 9.22.3 in /backend

Bumps [org.flywaydb:flyway-core](https://github.com/flyway/flyway) from 9.22.2 to 9.22.3.
- [Release notes](https://github.com/flyway/flyway/releases)
- [Commits](flyway/flyway@flyway-9.22.2...flyway-9.22.3)

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

Signed-off-by: dependabot[bot] <support@github.com>

backend/pom.xml

@@ -121,7 +121,7 @@
         <dependency>
             <groupId>org.flywaydb</groupId>
             <artifactId>flyway-core</artifactId>
-            <version>9.22.2</version>
+            <version>9.22.3</version>
         </dependency>
         <dependency>
             <groupId>org.springdoc</groupId>