Bump flyway-version from 12.5.0 to 12.6.0

Bumps `flyway-version` from 12.5.0 to 12.6.0.

Updates `org.flywaydb:flyway-core` from 12.5.0 to 12.6.0

Updates `org.flywaydb:flyway-mysql` from 12.5.0 to 12.6.0

Updates `org.flywaydb:flyway-database-postgresql` from 12.5.0 to 12.6.0

---
updated-dependencies:
- dependency-name: org.flywaydb:flyway-core
  dependency-version: 12.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.flywaydb:flyway-mysql
  dependency-version: 12.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.flywaydb:flyway-database-postgresql
  dependency-version: 12.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -23,7 +23,7 @@ sqlite-version = "3.53.1.0"
 mysql-version = "9.7.0"
 postgresql-version = "42.7.11"
 rerunner-jupiter-version = "2.1.6"
-flyway-version = "12.5.0"
+flyway-version = "12.6.0"
 selenide-version = "7.16.1"
 lombok-version = "1.18.46"
 jacocoVersion = "0.8.12"