Bump @glimmer/tracking from 1.0.3 to 1.0.4

Bumps [@glimmer/tracking](https://github.com/glimmerjs/glimmer.js) from 1.0.3 to 1.0.4.
- [Release notes](https://github.com/glimmerjs/glimmer.js/releases)
- [Changelog](https://github.com/glimmerjs/glimmer.js/blob/master/CHANGELOG.md)
- [Commits](glimmerjs/glimmer.js@v1.0.3...v1.0.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

yarn.lock

@@ -1373,9 +1373,9 @@
     simple-html-tokenizer "^0.5.10"
 
 "@glimmer/tracking@^1.0.2":
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/@glimmer/tracking/-/tracking-1.0.3.tgz#8b9b42aff6c206edeaaea178a95acc1eff62e61e"
-  integrity sha512-21WR13vPdzt1IQ6JmPPAu4szjV9yKdmLHV3nD0MLDj6/EoYv1c2PqpFBBlp++6xW8OnyDa++cQ8OFoQDP+MRpA==
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/@glimmer/tracking/-/tracking-1.0.4.tgz#f1bc1412fe5e2236d0f8d502994a8f88af1bbb21"
+  integrity sha512-F+oT8I55ba2puSGIzInmVrv/8QA2PcK1VD+GWgFMhF6WC97D+uZX7BFg+a3s/2N4FVBq5KHE+QxZzgazM151Yw==
   dependencies:
     "@glimmer/env" "^0.1.7"
     "@glimmer/validator" "^0.44.0"