Merge pull request #156 from getAlby/fix/tests-node-20-crypto

fix: tests failing in node 20

setupJest.ts

@@ -1,6 +1,8 @@
 import * as crypto from "crypto";
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-globalThis.crypto = crypto as any;
+if (!globalThis.crypto) {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  globalThis.crypto = crypto as any;
+}
 
 import jestFetchMock from "jest-fetch-mock";