fix: upgrade org.flywaydb:flyway-core from 9.20.1 to 9.21.0

Snyk has created this PR to upgrade org.flywaydb:flyway-core from 9.20.1 to 9.21.0.

See this package in Maven Repository:
https://mvnrepository.com/artifact/org.flywaydb/flyway-core/

See this project in Snyk:
https://app.snyk.io/org/obo/project/8d885d39-4a11-4bfc-8dbf-e9edb63a76aa?utm_source=github&utm_medium=referral&page=upgrade-pr

pom.xml

@@ -91,7 +91,7 @@
         <dependency>
             <groupId>org.flywaydb</groupId>
             <artifactId>flyway-core</artifactId>
-            <version>9.20.1</version>
+            <version>9.21.0</version>
         </dependency>
         <dependency>
             <groupId>no.nav</groupId>