chore: use `@std` import instead of `@test_util/std` (#22398)

This PR:
1. Replaces `@test_util/std`-prefixed imports with `@std`.
2. Adds `@std/` import map entries to a few `deno.json` files.

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/unit_node/crypto/crypto_key_test.ts b/tests/unit_node/crypto/crypto_key_test.ts
index 8d1b24b21..c8724d284 100644
--- a/tests/unit_node/crypto/crypto_key_test.ts
+++ b/tests/unit_node/crypto/crypto_key_test.ts
@@ -11,7 +11,7 @@ import {
 } from "node:crypto";
 import { promisify } from "node:util";
 import { Buffer } from "node:buffer";
-import { assertEquals, assertThrows } from "@test_util/std/assert/mod.ts";
+import { assertEquals, assertThrows } from "@std/assert/mod.ts";
 import { createHmac } from "node:crypto";
 
 const RUN_SLOW_TESTS = Deno.env.get("SLOW_TESTS") === "1";