Bump flyway-core from 7.6.0 to 7.7.0 in /core

Bumps [flyway-core](https://github.com/flyway/flyway) from 7.6.0 to 7.7.0.
- [Release notes](https://github.com/flyway/flyway/releases)
- [Commits](https://github.com/flyway/flyway/compare/flyway-7.6.0...flyway-7.7.0)

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

Closes #159

Change-Id: If0419148e17d1752466ad932ae36b5f8d6dbe327
diff --git a/core/pom.xml b/core/pom.xml
index b075181..b07c58b 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -12,7 +12,7 @@
 		<jersey.version>1.19.4</jersey.version>
 		<jetty.version>9.4.38.v20210224</jetty.version>
 		<hibernate.version>5.4.28.Final</hibernate.version>
-		<flyway.version>7.6.0</flyway.version>
+		<flyway.version>7.7.0</flyway.version>
 		<log4j.version>2.14.1</log4j.version>
 		<krill.version>[0.59.3,)</krill.version>
 		<koral.version>[0.37,)</koral.version>