Drupal 10 compatibility (composer requirements)

Drupal 10 is require "symfony/finder": "^6.2" (see https://git.drupalcode.org/project/drupal/-/blob/10.0.0/composer.json)

We need to update the dependency in composer otherwise the module won't install on D10

Error message:

- symfony/finder[v4.0.0-BETA1, ..., v4.4.10] require php ^7.1.3 -> your php version (8.1.18) does not satisfy that requirement.
- symfony/finder[v5.0.0-BETA1, ..., v5.0.0-RC1] require php ^7.2.9 -> your php version (8.1.18) does not satisfy that requirement.
- symfony/finder[v5.0.0, ..., v5.1.0-RC1] require php ^7.2.5 -> your php version (8.1.18) does not satisfy that requirement.
- drupal/google_webfonts_helper 1.0.0-alpha7 requires symfony/finder ^3.0|^4.0|^5.0 -> satisfiable by symfony/finder[v3.0.0-BETA1, ..., 3.4.x-dev, v4.0.0-BETA1, ..., 4.4.x-dev, v5.0.0-BETA1, ..., 5.4.x-dev].
- drupal/core-dev 10.0.9 requires symfony/finder ^6.2 -> satisfiable by symfony/finder[v6.2.0-BETA1, ..., 6.4.x-dev].