allow mixed type for configurationVariables in ecotone lite

[tandev]

Why is this change proposed?

\Ecotone\SymfonyContainer\ContainerCacheLayout::resolve allows

* @param array<string, mixed> $configurationVariables mixed types

When referencing symfony parameters, we also already successfully use other types like ints, as the container parameters can be of mixed types

ecotone-dev/packages/Symfony/DependencyInjection/Compiler/SymfonyConfigurationVariableService.php

Line 20 in 47dfc5b

$value = $this->container->getParameter($name);

Description of Changes

allow mixed in configuration variables array in EcotoneLite

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