Release v1.2.1

What's Changed

• [github-actions] Bump astral-sh/setup-uv from 5 to 7 by @dependabot[bot] in #166
• Bump idna from 3.11 to 3.15 by @dependabot[bot] in #169
• [github-actions] Bump codecov/codecov-action from 5 to 6 by @dependabot[bot] in #168
• Update msgspec requirement from <=0.21,>=0.18 to >=0.18,<=0.21.1 by @dependabot[bot] in #172
• [github-actions] Bump actions/checkout from 6 to 7 by @dependabot[bot] in #171
• [github-actions] Bump codecov/codecov-action from 6 to 7 by @dependabot[bot] in #170
• docs: add Spanish README by @webbrain-one in #173
• Relax msgspec upper bound for Python 3.15 by @Filimoa in #175

New Contributors

• @webbrain-one made their first contribution in #173
• @Filimoa made their first contribution in #175

Full Changelog: v1.2.0...v1.2.1