Fix CI by not including emcc compilation

Author: jcbrand

.github/workflows/karma-tests.yml

@@ -30,4 +30,4 @@ jobs:
     - name: Run Karma tests
       uses: GabrielBB/xvfb-action@v1
       with:
-          run: make check ARGS=--single-run
+          run: make test ARGS=--single-run

Makefile

@@ -13,10 +13,11 @@ node_modules: package.json package-lock.json
 eslint: node_modules
 	$(ESLINT) src/**/*.js test/**/*.js Gruntfile.js
 
+test: eslint
+	$(KARMA) start karma.conf.js $(ARGS)
 
 .PHONY: check
-check: eslint dist
-	$(KARMA) start karma.conf.js $(ARGS)
+check: dist test
 
 dist/libsignal-protocol.js:: node_modules
 	$(GRUNT) build