Bump js from 0.6.7 to 0.7.0 in /pkgs/test (#2168)

Bumps [js](https://github.com/dart-lang/sdk/tree/main/pkg) from 0.6.7 to 0.7.0.
- [Changelog](https://github.com/dart-lang/sdk/blob/main/CHANGELOG.md)
- [Commits](https://github.com/dart-lang/sdk/commits/0.7.0.0/pkg)

---
updated-dependencies:
- dependency-name: js
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: Kevin Moore <[email protected]>

Author: dependabot[bot]

pkgs/test/CHANGELOG.md

@@ -3,6 +3,7 @@
 * Fix a bug where in precompiled mode, html files for tests were no longer
   created.
 
+* Support the latest version of `package:js`.
 * Document the silent reporter in CLI help output.
 
 ## 1.25.0

pkgs/test/pubspec.yaml

@@ -15,7 +15,7 @@ dependencies:
   coverage: ^1.0.1
   http_multi_server: ^3.0.0
   io: ^1.0.0
-  js: ^0.6.4
+  js: '>=0.6.4 <0.8.0'
 
   # Use a tight version constraint to ensure that a constraint on matcher
   # properly constrains all features it provides.