Harden numeric character reference parsing - #140

Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/checkout@v4. Actions will be forced to run with Node.js 24 by default starting June 16th, 2026. Node.js 20 will be removed from the runner on September 16th, 2026. Please check if updated versions of these actions are available that support Node.js 24. To opt into Node.js 24 now, set the FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the runner or in your workflow file. Once Node.js 24 becomes the default, you can temporarily opt out by setting ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

System.stacktrace/0 is deprecated. Use __STACKTRACE__ instead

httpd_util:hexlist_to_integer/1 is deprecated and will be removed in OTP 26; use erlang:list_to_integer/2 with base 16 instead

http_uri:parse/1 is removed; use uri_string functions instead

httpd_util:hexlist_to_integer/1 is deprecated and will be removed in OTP 26; use erlang:list_to_integer/2 with base 16 instead

httpd_util:hexlist_to_integer/1 is deprecated and will be removed in OTP 26; use erlang:list_to_integer/2 with base 16 instead

httpd_util:hexlist_to_integer/1 is deprecated and will be removed in OTP 26; use erlang:list_to_integer/2 with base 16 instead

httpd_util:hexlist_to_integer/1 is deprecated and will be removed in OTP 26; use erlang:list_to_integer/2 with base 16 instead

variable '_Else' is already bound. If you mean to ignore this value, use '_' or a different underscore-prefixed name