Meta: Download commonmark.spec.json to the cache directory

Author: https://github.com/timschumi
Commit: https://github.com/SerenityOS/serenity/commit/cc6054ae3b
Pull-request: https://github.com/SerenityOS/serenity/pull/21066
Reviewed-by: https://github.com/AtkinsSJ ✅

Meta/CMake/commonmark_spec.cmake

@@ -1,6 +1,6 @@
 option(ENABLE_COMMONMARK_SPEC_DOWNLOAD "Enable download of commonmark test suite at build time" ON)
 
-set(MARKDOWN_TEST_PATH ${CMAKE_BINARY_DIR}/commonmark.spec.json)
+set(MARKDOWN_TEST_PATH ${SERENITY_CACHE_DIR}/commonmark.spec.json)
 set(MARKDOWN_TEST_URL https://spec.commonmark.org/0.30/spec.json)
 
 if(ENABLE_COMMONMARK_SPEC_DOWNLOAD)