Bump @smithy/middleware-serde from 4.0.6 to 4.2.6 in /result-builder

Bumps [@smithy/middleware-serde](https://github.com/smithy-lang/smithy-typescript/tree/HEAD/packages/middleware-serde) from 4.0.6 to 4.2.6.
- [Release notes](https://github.com/smithy-lang/smithy-typescript/releases)
- [Changelog](https://github.com/smithy-lang/smithy-typescript/blob/main/packages/middleware-serde/CHANGELOG.md)
- [Commits](https://github.com/smithy-lang/smithy-typescript/commits/@smithy/middleware-serde@4.2.6/packages/middleware-serde)

---
updated-dependencies:
- dependency-name: "@smithy/middleware-serde"
  dependency-version: 4.2.6
  dependency-type: indirect
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

result-builder/yarn.lock

@@ -748,16 +748,7 @@
     "@smithy/uuid" "^1.1.0"
     tslib "^2.6.2"
 
-"@smithy/middleware-serde@^4.0.3", "@smithy/middleware-serde@^4.0.6":
-  version "4.0.6"
-  resolved "https://registry.yarnpkg.com/@smithy/middleware-serde/-/middleware-serde-4.0.6.tgz#76e8523b48f2402ccef97b6764d9cfe35e7df669"
-  integrity sha512-YECyl7uNII+jCr/9qEmCu8xYL79cU0fqjo0qxpcVIU18dAPHam/iYwcknAu4Jiyw1uN+sAx7/SMf/Kmef/Jjsg==
-  dependencies:
-    "@smithy/protocol-http" "^5.1.1"
-    "@smithy/types" "^4.3.0"
-    tslib "^2.6.2"
-
-"@smithy/middleware-serde@^4.2.6":
+"@smithy/middleware-serde@^4.0.3", "@smithy/middleware-serde@^4.0.6", "@smithy/middleware-serde@^4.2.6":
   version "4.2.6"
   resolved "https://registry.yarnpkg.com/@smithy/middleware-serde/-/middleware-serde-4.2.6.tgz#7e710f43206e13a8c081a372b276e7b2c51bff5b"
   integrity sha512-VkLoE/z7e2g8pirwisLz8XJWedUSY8my/qrp81VmAdyrhi94T+riBfwP+AOEEFR9rFTSonC/5D2eWNmFabHyGQ==