Update dependency undici to v6 (#4994)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: ernestognw <ernestognw@gmail.com>

package-lock.json

@@ -42,7 +42,7 @@
         "solidity-ast": "^0.4.50",
         "solidity-coverage": "^0.8.5",
         "solidity-docgen": "^0.6.0-beta.29",
-        "undici": "^5.28.4",
+        "undici": "^6.11.1",
         "yargs": "^17.0.0"
       }
     },
@@ -6216,6 +6216,18 @@
         "semver": "bin/semver"
       }
     },
+    "node_modules/hardhat/node_modules/undici": {
+      "version": "5.28.4",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-5.28.4.tgz",
+      "integrity": "sha512-72RFADWFqKmUb2hmmvNODKL3p9hcB6Gt2DOQMis1SEBaV6a4MH8soBvzg+95CYhCKPFedut2JY9bMfrDl9D23g==",
+      "dev": true,
+      "dependencies": {
+        "@fastify/busboy": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=14.0"
+      }
+    },
     "node_modules/has": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/has/-/has-1.0.3.tgz",
@@ -10808,15 +10820,12 @@
       }
     },
     "node_modules/undici": {
-      "version": "5.28.4",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-5.28.4.tgz",
-      "integrity": "sha512-72RFADWFqKmUb2hmmvNODKL3p9hcB6Gt2DOQMis1SEBaV6a4MH8soBvzg+95CYhCKPFedut2JY9bMfrDl9D23g==",
+      "version": "6.12.0",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-6.12.0.tgz",
+      "integrity": "sha512-d87yk8lqSFUYtR5fTFe2frpkMIrUEz+lgoJmhcL+J3StVl+8fj8ytE4lLnJOTPCE12YbumNGzf4LYsQyusdV5g==",
       "dev": true,
-      "dependencies": {
-        "@fastify/busboy": "^2.0.0"
-      },
       "engines": {
-        "node": ">=14.0"
+        "node": ">=18.0"
       }
     },
     "node_modules/undici-types": {

package.json

@@ -83,7 +83,7 @@
     "solidity-ast": "^0.4.50",
     "solidity-coverage": "^0.8.5",
     "solidity-docgen": "^0.6.0-beta.29",
-    "undici": "^5.28.4",
+    "undici": "^6.11.1",
     "yargs": "^17.0.0"
   }
 }