Merge pull request #1141 from cmuellner/gcc-12-2

gitmodules: Fix tracking branch for GCC 12

Author: kito-cheng

.gitmodules

@@ -5,7 +5,7 @@
 [submodule "gcc"]
 	path = gcc
 	url = https://gcc.gnu.org/git/gcc.git
-	branch = releases/gcc-12.1.0
+	branch = releases/gcc-12
 [submodule "glibc"]
 	path = glibc
 	url = https://sourceware.org/git/glibc.git