Update emscripten.yml to fix Emscripten build error

Author: mcbarton

.github/workflows/emscripten.yml

@@ -805,8 +805,9 @@ jobs:
         ./emsdk/emsdk activate ${{matrix.emsdk_ver}}
         source ./emsdk/emsdk_env.sh
         micromamba activate CppInterOp-wasm
-        git clone --depth=1 https://github.com/compiler-research/xeus-cpp.git
+        git clone --depth=1 https://github.com/mcbarton/xeus-cpp.git
         cd ./xeus-cpp
+        git checkout Fix-resource-directory
         mkdir build
         pushd build
         export CMAKE_PREFIX_PATH=${{ env.PREFIX }}
@@ -817,6 +818,7 @@ jobs:
           -DCMAKE_INSTALL_PREFIX=${{ env.PREFIX }}          \
           -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON               \
           -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON            \
+          -DXEUS_CPP_RESOURCE_DIR=${{ env.LLVM_BUILD_DIR }}/lib/clang/${{ matrix.clang-runtime }} \
           -DSYSROOT_PATH=${{ env.SYSROOT_PATH }}                     \
           ..
         emmake make -j ${{ env.ncpus }} install