build: Update git-version-gen to latest upstream
build: Update git-version-gen to latest upstream

From commit 378351df7e63daca234c581f086b542026e07a27 of
https://git.savannah.gnu.org/cgit/autoconf.git/tree/build-aux/git-version-gen

frida/vala,frida/vala,frida/vala,GNOME/vala,GNOME/vala,frida/vala,frida/vala,GNOME/vala,GNOME/vala