chore(deps-dev): bump @smithy/property-provider from 4.2.14 to 4.3.4 (#1798)

Bumps [@smithy/property-provider](https://github.com/smithy-lang/smithy-typescript/tree/HEAD/packages/property-provider) from 4.2.14 to 4.3.4.
- [Release notes](https://github.com/smithy-lang/smithy-typescript/releases)
- [Changelog](https://github.com/smithy-lang/smithy-typescript/blob/main/packages/property-provider/CHANGELOG.md)
- [Commits](https://github.com/smithy-lang/smithy-typescript/commits/@smithy/property-provider@4.3.4/packages/property-provider)

---
updated-dependencies:
- dependency-name: "@smithy/property-provider"
  dependency-version: 4.3.4
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -19,7 +19,7 @@
   "devDependencies": {
     "@aws-sdk/credential-provider-env": "^3.972.39",
     "@biomejs/biome": "2.4.13",
-    "@smithy/property-provider": "^4.2.14",
+    "@smithy/property-provider": "^4.3.4",
     "@types/node": "^25.6.0",
     "@vitest/coverage-v8": "^3.2.4",
     "aws-sdk-client-mock": "^4.1.0",