changed newlib

Author: matgla

.gitmodules

@@ -3,7 +3,7 @@
 	url = https://github.com/c-testsuite/c-testsuite.git
 [submodule "tests/ir_tests/qemu/mps2-an505/libs/newlib"]
 	path = tests/ir_tests/qemu/mps2-an505/libs/newlib
-	url = https://github.com/bminor/newlib.git
+	url = https://sourceware.org/git/newlib-cygwin.git
 [submodule "tests/benchmarks/libs/pico-sdk"]
 	path = tests/benchmarks/libs/pico-sdk
 	url = https://github.com/raspberrypi/pico-sdk.git