Bump image from 3.3.0 to 4.0.4 in /web/samples_index (#1546)

Bumps [image](https://github.com/brendan-duncan/image) from 3.3.0 to 4.0.4.
- [Release notes](https://github.com/brendan-duncan/image/releases)
- [Changelog](https://github.com/brendan-duncan/image/blob/main/CHANGELOG.md)
- [Commits](https://github.com/brendan-duncan/image/compare/3.3.0...4.0.4)

---
updated-dependencies:
- dependency-name: image
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

web/samples_index/pubspec.yaml

@@ -26,7 +26,7 @@ dev_dependencies:
   build: ^2.3.0
   build_runner: ^2.3.0
   build_web_compilers: ^3.2.0
-  image: ^3.2.0
+  image: ">=3.2.0 <5.0.0"
 
 # waiting for the next material-components-web release.
 # Once released, it will need to be rolled into package:mdc_web.