Update dependency org.flywaydb:flyway-core to v8.1.0 (#270)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

build.gradle

@@ -40,7 +40,7 @@ ext {
     junitJupiterEngineVersion = '5.8.1'
     vertxVersion = '3.9.10'
     javaDotenvVersion = '5.2.2'
-    flywayCoreVersion = '8.0.5'
+    flywayCoreVersion = '8.1.0'
     h2Version = '1.4.200'
     googleJsonSimpleVersion = '1.1.1'
     googleGsonVersion = '2.8.9'