[Composer] Added conflict with lexik/jwt-authentication-bundle 2.12.0

[mnocon]

Travis failure: https://travis-ci.com/github/ezsystems/ezplatform-page-builder/jobs/518410065#L2576

Executing script cache:clear [KO]
 [KO]
Script cache:clear returned with error code 255
!!  PHP Fatal error:  Class EzSystems\EzPlatformPageBuilder\Security\EditorialMode\TokenManager contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (Lexik\Bundle\JWTAuthenticationBundle\Services\JWTTokenManagerInterface::decodeFromJsonWebToken) in /var/www/vendor/ezsystems/ezplatform-page-builder/src/lib/Security/EditorialMode/TokenManager.php on line 24
!!  Symfony\Component\ErrorHandler\Error\FatalError {#10767
!!    -error: array:4 [
!!      "type" => 1
!!      "message" => "Class EzSystems\EzPlatformPageBuilder\Security\EditorialMode\TokenManager contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (Lexik\Bundle\JWTAuthenticationBundle\Services\JWTTokenManagerInterface::decodeFromJsonWebToken)"
!!      "file" => "/var/www/vendor/ezsystems/ezplatform-page-builder/src/lib/Security/EditorialMode/TokenManager.php"
!!      "line" => 24
!!    ]
!!    #message: "Error: Class EzSystems\EzPlatformPageBuilder\Security\EditorialMode\TokenManager contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (Lexik\Bundle\JWTAuthenticationBundle\Services\JWTTokenManagerInterface::decodeFromJsonWebToken)"
!!    #code: 0
!!    #file: "./vendor/ezsystems/ezplatform-page-builder/src/lib/Security/EditorialMode/TokenManager.php"
!!    #line: 24
!!  }
!!  
Script @auto-scripts was called via post-install-cmd

It's caused by the latest release in LexikJWTAuthenticationBundle, please see lexik/LexikJWTAuthenticationBundle#872 (comment) for more information.

In theory we could only limit the dependency for ezplatform-ee, as this is the project where it breaks for us, but I think it's better to use the same bundle version across editions to avoid complications.

[adamwojs]

Could you please merge up changes @mnocon?

[Steveb-p]

Shouldn't this also include all the future versions, up from 2.12.0?

[mnocon]

@Steveb-p please see the discussion I've linked - the BC break should be removed in the next bugfix version.