upgrade emcc

Author: justjake

templates/Variant.mk

@@ -1,6 +1,6 @@
 # Tools
-EMSDK_VERSION=3.1.59
-EMSDK_DOCKER_IMAGE=emscripten/emsdk:3.1.59
+EMSDK_VERSION=3.1.64
+EMSDK_DOCKER_IMAGE=emscripten/emsdk:3.1.64
 EMCC_SRC=../../scripts/emcc.sh
 EMCC=EMSDK_VERSION=$(EMSDK_VERSION) EMSDK_DOCKER_IMAGE=$(EMSDK_DOCKER_IMAGE) EMSDK_PROJECT_ROOT=$(REPO_ROOT) EMSDK_DOCKER_CACHE=$(REPO_ROOT)/emsdk-cache/$(EMSDK_VERSION) $(EMCC_SRC)
 GENERATE_TS=$(GENERATE_TS_ENV) ../../scripts/generate.ts