[@types/node] Update the definition of import.meta.resolve(…) for `…

…node` 20.6.

This was previously available:

- returning a `Promise`,
- behind a flag, and
- with an optional second `parent` parameter.

As of `node` v20.6.0 (https://nodejs.org/en/blog/release/v20.6.0), it is now:

- synchronous,
- unflagged without a parameter, and
- with the `parent` parameter only being supported behind the `--experimental-import-meta-resolve` flag.

To minimize the potential of confusion that would come from mixing the unflagged version with flagged parameter, this change only documents the unflagged version.

Note that there was a bug that sometimes returned a `URL` instead of a `string` in v20.6.0, but this was fixed in v20.8.0 (nodejs/node#49695).

types/node/module.d.ts

@@ -92,18 +92,12 @@ declare module 'module' {
         interface ImportMeta {
             url: string;
             /**
-             * @experimental
-             * This feature is only available with the `--experimental-import-meta-resolve`
-             * command flag enabled.
-             *
              * Provides a module-relative resolution function scoped to each module, returning
              * the URL string.
              *
-             * @param specified The module specifier to resolve relative to `parent`.
-             * @param parent The absolute parent module URL to resolve from. If none
-             * is specified, the value of `import.meta.url` is used as the default.
+             * @param specified The module specifier to resolve relative to the current module's URL (`import.meta.url`).
              */
-            resolve?(specified: string, parent?: string | URL): Promise<string>;
+            resolve?(specified: string): string;
         }
     }
     export = Module;