fix: update crypto import to remove node: prefix

Signed-off-by: Jeromy Cannon <[email protected]>

src/core/key_manager.ts

@@ -2,7 +2,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 import * as x509 from '@peculiar/x509';
-import crypto from 'node:crypto';
+import crypto from 'crypto';
 import fs from 'fs';
 import path from 'path';
 import {SoloError, IllegalArgumentError, MissingArgumentError} from './errors.js';