Add types to exports map

[jakebailey]

Without this, newer TS module resolution modes point out that there aren't types for these export mappings:

src/schema.test.ts:1:23 - error TS7016: Could not find a declaration file for module 'klona'. '/home/jabaile/work/python/pyright-action/node_modules/klona/dist/index.mjs' implicitly has an 'any' type.
  There are types at '/home/jabaile/work/python/pyright-action/node_modules/klona/index.d.ts', but this result could not be resolved when respecting package.json "exports". The 'klona' library may need to update its package.json or typings.

1 import { klona } from "klona";

[lukeed]

Thanks :) these should all be “index.d.ts” though

[jakebailey]

Ugh yes, my mistake.

[jakebailey]

Fixed!