ewaol-distro/go-fsnotify: Switch to main branch

The upstream project has changed from master -> main, so we update
our branch to match .. otherwise, we fail the fetch!

Change based on https://git.yoctoproject.org/meta-virtualization/commit/?h=hardknott&id=5f3650880ec887263b6e4ab160c11ed7dffd32c2



Issue-Id: SCM-3910
Signed-off-by: Diego Sueiro <diego.sueiro@arm.com>
Change-Id: Ic95fdf4bd348069eeec50f213e62c13e2f8d8db8