fix: upgrade sandboxes-service-api-client to ^2.1.1 (drop required provisioningStrategy)

[OlenaMarchuk]

Changes:

• Bump keboola/sandboxes-service-api-client ^1.8.0 → ^2.1.1 (pulls in new keboola/php-api-client-base 1.1.2).
• Adapt the changed AppsApiClient constructor in DeleteOwnerlessWorkspaces and DeleteOrganizationOwnerlessWorkspaces — v2 dropped the ApiClientConfiguration wrapper, so args are now passed directly (new AppsApiClient(baseUrl:, storageToken:, userAgent:)).

Why

storage:delete-ownerless-workspaces crashed at App.php:79 with Property provisioningStrategy is missing from API response. The 1.8.0 App model listed provisioningStrategy as a required property, but the sandboxes service (e.g. eu-central-1.keboola.com) doesn't return it, so App::fromArray() threw as soon as listApps() tried to hydrate any Python/R sandbox. Client v2.1.0 removed provisioningStrategy from REQUIRED_PROPERTIES (and the field), fixing the mismatch.

Lock file changes are minimal (only the target package + its new base dependency; guzzle kept pinned). phpcs, phpstan (level 9) and phpunit all pass locally.

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Additional notes

⚠️ Don't forget to release new version after merge

Link to Devin session: https://app.devin.ai/sessions/f90cad9ed68f4732b8bac0a66a3b358b
Requested by: @OlenaMarchuk

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