fix: resolve a11y warnings from Svelte version 3.58 (#1732)

* chore(deps-dev): upgrade svelte to 3.58

* chore(a11y): ignore false positives

Referencing the upstream Carbon React implementation, these warnings can be ignored.

* fix(list-box-menu-item): set `tabindex` to `-1`

* chore: fix `tabindex` capitalization

The Svelte Language server does not detect `tabIndex` as a valid attribute.

Note, however, that `tabIndex` is correct when using it in JavaScript (e.g., `node.tabIndex`).

docs/package.json

@@ -22,7 +22,7 @@
     "prism-svelte": "^0.4.7",
     "prismjs": "^1.28.0",
     "remark-slug": "^6.0.0",
-    "svelte": "^3.57.0",
+    "svelte": "^3.58.0",
     "vite": "^3.0.9"
   },
   "routify": {

docs/yarn.lock

@@ -165,7 +165,7 @@ bufferutil@^4.0.1:
     node-gyp-build "~3.7.0"
 
 carbon-components-svelte@../:
-  version "0.73.3"
+  version "0.73.5"
   dependencies:
     flatpickr "4.6.9"
 
@@ -1280,10 +1280,10 @@ svelte-hmr@^0.14.12:
   resolved "https://registry.yarnpkg.com/svelte-hmr/-/svelte-hmr-0.14.12.tgz#a127aec02f1896500b10148b2d4d21ddde39973f"
   integrity sha512-4QSW/VvXuqVcFZ+RhxiR8/newmwOCTlbYIezvkeN6302YFRE8cXy0naamHcjz8Y9Ce3ITTZtrHrIL0AGfyo61w==
 
-svelte@^3.57.0:
-  version "3.57.0"
-  resolved "https://registry.yarnpkg.com/svelte/-/svelte-3.57.0.tgz#a3969cfe51f25f2a55e75f7b98dbd02c3af0980b"
-  integrity sha512-WMXEvF+RtAaclw0t3bPDTUe19pplMlfyKDsixbHQYgCWi9+O9VN0kXU1OppzrB9gPAvz4NALuoca2LfW2bOjTQ==
+svelte@^3.58.0:
+  version "3.58.0"
+  resolved "https://registry.yarnpkg.com/svelte/-/svelte-3.58.0.tgz#d3e6f103efd6129e51c7d709225ad3b4c052b64e"
+  integrity sha512-brIBNNB76mXFmU/Kerm4wFnkskBbluBDCjx/8TcpYRb298Yh2dztS2kQ6bhtjMcvUhd5ynClfwpz5h2gnzdQ1A==
 
 symbol-tree@^3.2.4:
   version "3.2.4"