[TWIG] The spaceless tag is deprecated use filter instead

[Prometee]

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The spaceless filter was added in Twig 2.7.

Using Sylius 1.12.14 and going to the URL /admin/brands/new you will get this error without this PR:

Unexpected "spaceless" tag (expecting closing tag for the "block" tag defined near line 4).

Maybe spaceless can be also removed, or we can use Twig whitespace control: https://twig.symfony.com/doc/2.x/templates.html#whitespace-control WDTY @loevgaard ?