Skip asm3.test_files because it runs out of memory on CI

Author: juj

tests/test_core.py

@@ -4847,6 +4847,7 @@ def test_files(self):
     elif '-O3' in self.emcc_args and not self.is_wasm():
       print('closure 2')
       self.emcc_args += ['--closure', '2', '-Wno-almost-asm'] # Use closure 2 here for some additional coverage
+      return self.skipTest('TODO: currently skipped because CI runs out of memory running Closure in this test!')
 
     self.emcc_args += ['-s', 'FORCE_FILESYSTEM=1', '--pre-js', 'pre.js']