Update dependency undici to v7

Author: renovate[bot]

packages/plugin-hardhat/package.json

@@ -42,7 +42,7 @@
     "debug": "^4.1.1",
     "ethereumjs-util": "^7.1.5",
     "proper-lockfile": "^4.1.1",
-    "undici": "^6.11.1"
+    "undici": "^7.0.0"
   },
   "peerDependencies": {
     "@nomicfoundation/hardhat-ethers": "^3.0.6",

yarn.lock

@@ -7077,10 +7077,10 @@ undici@^5.14.0:
   dependencies:
     "@fastify/busboy" "^2.0.0"
 
-undici@^6.11.1:
-  version "6.21.2"
-  resolved "https://registry.yarnpkg.com/undici/-/undici-6.21.2.tgz#49c5884e8f9039c65a89ee9018ef3c8e2f1f4928"
-  integrity sha512-uROZWze0R0itiAKVPsYhFov9LxrPMHLMEQFszeI2gCN6bnIIZ8twzBCJcN2LJrBBLfrP0t1FW0g+JmKVl8Vk1g==
+undici@^7.0.0:
+  version "7.18.1"
+  resolved "https://registry.yarnpkg.com/undici/-/undici-7.18.1.tgz#b043b3c1e25319fe463029131c089cec971e2f0c"
+  integrity sha512-0L1RtVqD2twa4hYKeNitqG8zvwe+4cT7L2FDP+64QC8mxjA4TlKjSqPLyOjaRdnUnWYQyxKyhDkqOHLKXw+lkA==
 
 unfetch@^4.2.0:
   version "4.2.0"