Tag test_generators main

Author: msimacek

graalpython/com.oracle.graal.python.test/src/tests/unittest_tags/test_generators.txt

@@ -13,4 +13,5 @@
 *graalpython.lib-python.3.test.test_generators.GeneratorTest.test_name
 *graalpython.lib-python.3.test.test_generators.GeneratorTest.test_pickle
 *graalpython.lib-python.3.test.test_generators.SignalAndYieldFromTest.test_raise_and_yield_from
+*graalpython.lib-python.3.test.test_generators.TestMain.test_main
 *graalpython.lib-python.3.test.test_generators.YieldFromTests.test_generator_gi_yieldfrom