build: use archive download for doxy css dependency - close #1352

docs/CMakeLists.txt

@@ -7,13 +7,11 @@ if(DOXYGEN_FOUND)
 
     FetchContent_Declare(
         doxygen-awesome-css
-        GIT_REPOSITORY https://github.com/jothepro/doxygen-awesome-css
-        GIT_TAG main
-        GIT_SHALLOW 1
+        URL https://github.com/jothepro/doxygen-awesome-css/archive/refs/heads/main.zip
     )
 
     FetchContent_MakeAvailable(doxygen-awesome-css)
-    
+
     set(DOXY_SOURCE_DIRECTORY ${EnTT_SOURCE_DIR}/src)
     set(DOXY_CSS_DIRECTORY ${doxygen-awesome-css_SOURCE_DIR})
     set(DOXY_DOCS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})