Fix Uint8Array comparisons and update vitest (#26805)

Compare those `Uint8Array` via conversion to Array which are properly
comparable, so that we don't have to worry about whether `TextEncoder`
and `UInt8Array` from the environment are compatible or not.

---------

Co-authored-by: delvh <dev.lh@web.de>

package.json

@@ -81,7 +81,7 @@
     "svgo": "3.0.2",
     "updates": "14.4.0",
     "vite-string-plugin": "1.1.2",
-    "vitest": "0.34.2"
+    "vitest": "0.34.3"
   },
   "browserslist": [
     "defaults",