Zorba fails to build with modern libxml2

[SMillerDev]

Compiling creates errors like:

 /tmp/zorba-20240217-2363463-adrtuk/zorba-3.1/src/store/naive/loader_fast.cpp:219:26: error: invalid conversion from ‘void (*)(void*, xmlErrorPtr)’ {aka ‘void (*)(void*, _xmlError*)’} to ‘xmlStructuredErrorFunc’ {aka ‘void (*)(void*, const _xmlError*)’} [-fpermissive]
    219 |   theSaxHandler.serror = &XmlLoader::error;
        |                          ^~~~~~~~~~~~~~~~~
        |                          |
        |                          void (*)(void*, xmlErrorPtr) {aka void (*)(void*, _xmlError*)}
  /tmp/zorba-20240217-2363463-adrtuk/zorba-3.1/src/store/naive/loader_dtd.cpp: In constructor ‘zorba::simplestore::FragmentXmlLoader::FragmentXmlLoader(zorba::store::ItemFactory*, zorba::XQueryDiagnostics*, const zorba::store::LoadProperties&, bool)’:
  /tmp/zorba-20240217-2363463-adrtuk/zorba-3.1/src/store/naive/loader_dtd.cpp:110:26: error: invalid conversion from ‘void (*)(void*, xmlErrorPtr)’ {aka ‘void (*)(void*, _xmlError*)’} to ‘xmlStructuredErrorFunc’ {aka ‘void (*)(void*, const _xmlError*)’} [-fpermissive]
    110 |   theSaxHandler.serror = &XmlLoader::error;
        |                          ^~~~~~~~~~~~~~~~~
        |                          |
        |                          void (*)(void*, xmlErrorPtr) {aka void (*)(void*, _xmlError*)}
  /tmp/zorba-20240217-2363463-adrtuk/zorba-3.1/src/store/naive/loader_dtd.cpp: In constructor ‘zorba::simplestore::DtdXmlLoader::DtdXmlLoader(zorba::store::ItemFactory*, zorba::XQueryDiagnostics*, const zorba::store::LoadProperties&, bool)’:
  /tmp/zorba-20240217-2363463-adrtuk/zorba-3.1/src/store/naive/loader_dtd.cpp:603:26: error: invalid conversion from ‘void (*)(void*, xmlErrorPtr)’ {aka ‘void (*)(void*, _xmlError*)’} to ‘xmlStructuredErrorFunc’ {aka ‘void (*)(void*, const _xmlError*)’} [-fpermissive]
    603 |   theSaxHandler.serror = &XmlLoader::error;
        |                          ^~~~~~~~~~~~~~~~~
        |                          |
        |                          void (*)(void*, xmlErrorPtr) {aka void (*)(void*, _xmlError*)}
  make[2]: *** [src/CMakeFiles/zorba_simplestore.dir/build.make:10005: src/CMakeFiles/zorba_simplestore.dir/store/naive/loader_fast.cpp.o] Error 1

As spotted in: https://github.com/Homebrew/homebrew-core/pull/153108