Update dependency undici to v6.21.1 [SECURITY] (#1114)

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

yarn.lock

@@ -6465,9 +6465,9 @@ undici@^5.14.0:
     "@fastify/busboy" "^2.0.0"
 
 undici@^6.11.1:
-  version "6.19.8"
-  resolved "https://registry.yarnpkg.com/undici/-/undici-6.19.8.tgz#002d7c8a28f8cc3a44ff33c3d4be4d85e15d40e1"
-  integrity sha512-U8uCCl2x9TK3WANvmBavymRzxbfFYG+tAu+fgx3zxQy3qdagQqBLwJVrdyO1TBfUXvfKveMKJZhpvUYoOjM+4g==
+  version "6.21.1"
+  resolved "https://registry.yarnpkg.com/undici/-/undici-6.21.1.tgz#336025a14162e6837e44ad7b819b35b6c6af0e05"
+  integrity sha512-q/1rj5D0/zayJB2FraXdaWxbhWiNKDvu8naDT2dl1yTlvJp4BLtOcp2a5BvgGNQpYYJzau7tf1WgKv3b+7mqpQ==
 
 unfetch@^4.2.0:
   version "4.2.0"