Update Liquibase to 4.7.1

[php-coder]

Changelogs:

• https://github.com/liquibase/liquibase/releases/tag/v4.6.0
• https://github.com/liquibase/liquibase/releases/tag/v4.6.1
• https://github.com/liquibase/liquibase/releases/tag/v4.6.2
• https://github.com/liquibase/liquibase/releases/tag/v4.7.0
• https://github.com/liquibase/liquibase/releases/tag/v4.7.1

[php-coder]

Application started to fails:

liquibase.exception.MigrationFailedException: Migration failed for change set liquibase/version/0.4/2017-05-29--test_image.xml::add-test-image::php-coder:
      Reason: liquibase.exception.DatabaseException: BLOB resource not found: /test/test.png

[php-coder]

I've filled the issue: liquibase/liquibase#2200