build(deps): update @esri/calcite-ui-icons to v3.26.8 (#9004)

**Related Issue:** N/A

## Summary

🤜💥🤛

Author: jcfranco

package-lock.json

@@ -75,7 +75,7 @@
   },
   "devDependencies": {
     "@esri/calcite-design-tokens": "^2.1.2-next.2",
-    "@esri/calcite-ui-icons": "3.26.4",
+    "@esri/calcite-ui-icons": "3.26.8",
     "@esri/eslint-plugin-calcite-components": "^1.1.1-next.1",
     "@stencil-community/eslint-plugin": "0.7.1",
     "@stencil-community/postcss": "2.2.0",