build(deps-dev): bump @fluentui/utilities from 8.6.0 to 8.7.0 (#1207)

Bumps [@fluentui/utilities](https://github.com/microsoft/fluentui) from 8.6.0 to 8.7.0.
- [Release notes](https://github.com/microsoft/fluentui/releases)
- [Changelog](https://github.com/microsoft/fluentui/blob/master/azure-pipelines.release-fluentui.yml)
- [Commits](https://github.com/microsoft/fluentui/compare/@fluentui/utilities_v8.6.0...@fluentui/utilities_v8.7.0)

---
updated-dependencies:
- dependency-name: "@fluentui/utilities"
  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>

yarn.lock

@@ -2045,9 +2045,9 @@
     tslib "^2.1.0"
 
 "@fluentui/utilities@^8.3.9":
-  version "8.6.0"
-  resolved "https://registry.yarnpkg.com/@fluentui/utilities/-/utilities-8.6.0.tgz#3a4dda0ecd9ff485a6cf039ba36ec23a71059811"
-  integrity sha512-hnqIFtNaZkzhWFog7djEdHlIExCQ02QZo8f8UT5Z0glCVa9SaaOz4CFhQzKNS4RejAzKMSATckWXJlOxMIRKSg==
+  version "8.7.0"
+  resolved "https://registry.yarnpkg.com/@fluentui/utilities/-/utilities-8.7.0.tgz#0b3d42d67b573299c824d8d33b99c2a48380043b"
+  integrity sha512-1XBtq0KNzSUHlfY5bGKNe8NW5cn1S4+3j0dnw7D34HLhpnn/VusMLAi6NNqf5qiTaoW8YKMs7C4hJ221Fihs4g==
   dependencies:
     "@fluentui/dom-utilities" "^2.2.0"
     "@fluentui/merge-styles" "^8.4.0"