Update lit-html (#2653)

This PR updates lit-html. The update is needed because the previous
version had a bug related to `asyncReplace` not updating values correctly.
The bug was surfaced during a refactoring related to the dynamic captcha.

package.json

@@ -67,7 +67,7 @@
     "buffer": "^6.0.3",
     "dompurify": "^3.1.3",
     "idb-keyval": "^6.2.1",
-    "lit-html": "^2.7.2",
+    "lit-html": "^3.2.1",
     "marked": "^11.0.0",
     "qr-creator": "^1.0.0",
     "stream-browserify": "^3.0.0",