Add two items to licenses allow list.

Add the following two items to the licenses allow list as dependencies
of ScreenAI:
 - LicenseRef-MicrosoftEnterpriseWindowsDriverKit
 - LicenseRef-Public-Domain-Gutenberg

Bug: 378472917
Change-Id: I4f8786fb9880a61dcb379b57e0ead3d3ae9cff41
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/6529681
Commit-Queue: Jordan Brown <rop@google.com>
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Reviewed-by: Jordan Brown <rop@google.com>

metadata/fields/custom/license_allowlist.py

@@ -49,6 +49,7 @@ ALLOWED_SPDX_LICENSES = frozenset([
     # go/keep-sorted start case=no
     "blessing",
     "CC0-1.0",
+    "LicenseRef-Public-Domain-Gutenberg",
     "LZMA-SDK-9.22",
     "Unlicense",
     # go/keep-sorted end
@@ -195,6 +196,7 @@ WITH_PERMISSION_ONLY = frozenset([
     # by_exception_only.
     # go/keep-sorted start case=no
     "Commercial",
+    "LicenseRef-MicrosoftEnterpriseWindowsDriverKit",
     "LicenseRef-Play-Core-SDK-TOS",
     "LicenseRef-Unity-Companion-License-1.3",
     "Opus-Patent-BSD-3-Clause",