Build(deps): Bump a11y-dialog in /app/assets/javascripts (#23755)

Bumps [a11y-dialog](https://github.com/KittyGiraudel/a11y-dialog) from 8.0.2 to 8.0.4.
- [Release notes](https://github.com/KittyGiraudel/a11y-dialog/releases)
- [Commits](https://github.com/KittyGiraudel/a11y-dialog/compare/8.0.2...8.0.4)

---
updated-dependencies:
- dependency-name: a11y-dialog
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

app/assets/javascripts/dialog-holder/package.json

@@ -8,7 +8,7 @@
     "ember-addon"
   ],
   "dependencies": {
-    "a11y-dialog": "8.0.2",
+    "a11y-dialog": "8.0.4",
     "ember-auto-import": "^2.6.3",
     "ember-cli-babel": "^8.1.0",
     "ember-cli-htmlbars": "^6.3.0"

app/assets/javascripts/discourse/package.json

@@ -51,7 +51,7 @@
     "@uppy/drop-target": "2.0.1",
     "@uppy/utils": "5.4.3",
     "@uppy/xhr-upload": "3.1.1",
-    "a11y-dialog": "8.0.2",
+    "a11y-dialog": "8.0.4",
     "admin": "1.0.0",
     "babel-import-util": "^2.0.1",
     "babel-plugin-ember-template-compilation": "^2.2.0",

app/assets/javascripts/yarn.lock

@@ -2104,10 +2104,10 @@
   resolved "https://registry.yarnpkg.com/@zxing/text-encoding/-/text-encoding-0.9.0.tgz#fb50ffabc6c7c66a0c96b4c03e3d9be74864b70b"
   integrity sha512-U/4aVJ2mxI0aDNI8Uq0wEhMgY+u4CNtEb0om3+y3+niDAsoTCOB33UF0sxpzqzdqXLqmvc+vZyAt4O8pPdfkwA==
 
-a11y-dialog@8.0.2:
-  version "8.0.2"
-  resolved "https://registry.yarnpkg.com/a11y-dialog/-/a11y-dialog-8.0.2.tgz#08b8315d500b7f8c4200ec37d3a0fd15ccd54738"
-  integrity sha512-EaEsUqgZuQBV5stIz/p/gFYDtFHZSElkCDF0zUEcr3GIaPMydDOdjhsi8Gn3CkdUPJNHXK8BR6OGg6NkuubkGw==
+a11y-dialog@8.0.4:
+  version "8.0.4"
+  resolved "https://registry.yarnpkg.com/a11y-dialog/-/a11y-dialog-8.0.4.tgz#731a983d38d059665ff7e62daccedf5214131be8"
+  integrity sha512-MQrLxqLPx4E8+ynGwulBs6OjtxQT/XemgnlNPb+cR8K/qdwHBQv1WZQZpBuTVhlWGpAwWmSYffUZ/78anhcD3w==
   dependencies:
     focusable-selectors "^0.8.0"