fix makefile

Author: marcoieni

src/bootstrap/mk/Makefile.in

@@ -110,7 +110,7 @@ ci-msvc: ci-msvc-py ci-msvc-ps1
 
 # Set of tests that should represent half of the time of the test suite.
 # Used to split tests across multiple CI runners.
-TESTS_IN_MINGW_X := tests/\*
+TESTS_IN_MINGW_X := tests/
 
 # test both x and bootstrap entrypoints
 ci-mingw-x: