Update changeset baseBranch from next to main

[matthewp]

Changes

• Updates .changeset/config.json baseBranch from origin/next to origin/main. After the v7 release merged next into main, main is the active development branch. The stale origin/next ref causes pnpm changeset status to fail in CI workflows like preview releases.

Testing

• No test changes. This is a config-only fix.

Docs

• No docs needed.

[changeset-bot]

⚠️ No Changeset found

Latest commit: f575843

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