v1.21.5

What's Changed

• Add optional TCGdex sync languages by @Git-Romer in #252

Full Changelog: v1.21.4...v1.21.5

Versioning note

This release contains the larger multilingual TCGdex sync change from PR #252 and should have been versioned as v1.22.0. The version bump was missed when the PR was merged, so the follow-up correction continues in PR #251 as v1.22.1.