Bump flyway-core from 6.2.3 to 7.9.1

Bumps [flyway-core](https://github.com/flyway/flyway) from 6.2.3 to 7.9.1.
- [Release notes](https://github.com/flyway/flyway/releases)
- [Commits](flyway/flyway@flyway-6.2.3...flyway-7.9.1)

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

pom.xml

@@ -11,7 +11,7 @@
     <properties>
         <byte-buddy.version>1.10.8</byte-buddy.version>
         <coveralls-maven-plugin.version>4.3.0</coveralls-maven-plugin.version>
-        <flyway.version>6.2.3</flyway.version>
+        <flyway.version>7.9.1</flyway.version>
         <guava.version>30.1-jre</guava.version>
         <h2.version>1.4.200</h2.version>
         <hsqldb.version>2.5.0</hsqldb.version>