Bump @smithy/util-body-length-browser in /s3-uploader (#2771)

Bumps [@smithy/util-body-length-browser](https://github.com/smithy-lang/smithy-typescript/tree/HEAD/packages/util-body-length-browser) from 4.0.0 to 4.2.0.
- [Release notes](https://github.com/smithy-lang/smithy-typescript/releases)
- [Changelog](https://github.com/smithy-lang/smithy-typescript/blob/main/packages/util-body-length-browser/CHANGELOG.md)
- [Commits](https://github.com/smithy-lang/smithy-typescript/commits/@smithy/util-body-length-browser@4.2.0/packages/util-body-length-browser)

---
updated-dependencies:
- dependency-name: "@smithy/util-body-length-browser"
  dependency-version: 4.2.0
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

s3-uploader/yarn.lock

@@ -1076,14 +1076,7 @@
     "@smithy/util-utf8" "^4.2.0"
     tslib "^2.6.2"
 
-"@smithy/util-body-length-browser@^4.0.0":
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/@smithy/util-body-length-browser/-/util-body-length-browser-4.0.0.tgz#965d19109a4b1e5fe7a43f813522cce718036ded"
-  integrity sha512-sNi3DL0/k64/LO3A256M+m3CDdG6V7WKWHdAiBBMUN8S3hK3aMPhwnPik2A/a2ONN+9doY9UxaLfgqsIRg69QA==
-  dependencies:
-    tslib "^2.6.2"
-
-"@smithy/util-body-length-browser@^4.2.0":
+"@smithy/util-body-length-browser@^4.0.0", "@smithy/util-body-length-browser@^4.2.0":
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/@smithy/util-body-length-browser/-/util-body-length-browser-4.2.0.tgz#04e9fc51ee7a3e7f648a4b4bcdf96c350cfa4d61"
   integrity sha512-Fkoh/I76szMKJnBXWPdFkQJl2r9SjPt3cMzLdOB6eJ4Pnpas8hVoWPYemX/peO0yrrvldgCUVJqOAjUrOLjbxg==