fix: adjust codec exports to make TS defn's more correct

[rvagg]

(and update deps)
FIxes #116 I believe

types/codecs/json.d.ts is now:

export const name: "json";
export const code: 512;
export function encode<T>(node: T): ByteView<T>;
export function decode<T>(data: ByteView<T>): T;
export type ByteView<T> = import('./interface').ByteView<T>;
//# sourceMappingURL=json.d.ts.map

(previous is https://unpkg.com/browse/multiformats@9.4.6/types/codecs/json.d.ts)

types/codecs/raw.d.ts is now:

/**
 * @template T
 * @typedef {import('./interface').ByteView<T>} ByteView
 */
export const name: "raw";
export const code: 85;
export function encode(node: Uint8Array): ByteView<Uint8Array>;
export function decode(data: ByteView<Uint8Array>): Uint8Array;
export type ByteView<T> = import('./interface').ByteView<T>;
//# sourceMappingURL=raw.d.ts.map

(previous is https://unpkg.com/browse/multiformats@9.4.6/types/codecs/raw.d.ts)

I don't know why raw.d.ts gets the jsdoc insert while json.d.ts doesn't, but I'm hoping that doesn't matter since we're getting encode<T> and decode<T> on json.d.ts where it matters.

/cc @woss