chore(deps): bump turbohtml to 1.15.3 (#14662)

turbohtml 1.10.0 -> 1.15.3. Includes sanitizer hardening (GHSA-9x48-74fj-x342, GHSA-wh2c-9vrv-w597, GHSA-pjrh-5m66-3wwf, URL schemes hidden behind character references in the bleach shim). Only the bleach clean shim and linkify are used, in the mail parser.

pyproject.toml

@@ -76,7 +76,7 @@ dependencies = [
   "tantivy~=0.26.0",
   "tika-client[httpx]~=1.0",
   "torch>=2.13,<2.15",
-  "turbohtml~=1.10.0",
+  "turbohtml~=1.15.3",
   "watchfiles>=1.2",
   "whitenoise~=6.11",
   "whoosh-compat[tantivy]==0.3",