Bump to Buildah v1.27.0

As the title says.

Vendor Buildah v1.27.0 into Podman in preparation for Buildah v4.2

[No New Tests Needed]

Signed-off-by: tomsweeneyredhat <tsweeney@redhat.com>

vendor/github.com/containers/buildah/pkg/util/uptime_freebsd.go

@@ -0,0 +1,25 @@
+package util
+
+import (
+	"time"
+	"unsafe"
+
+	"golang.org/x/sys/unix"
+)
+
+// For some reason, unix.ClockGettime isn't implemented by x/sys/unix on FreeBSD
+func clockGettime(clockid int32, time *unix.Timespec) (err error) {
+	_, _, e1 := unix.Syscall(unix.SYS_CLOCK_GETTIME, uintptr(clockid), uintptr(unsafe.Pointer(time)), 0)
+	if e1 != 0 {
+		return e1
+	}
+	return nil
+}
+
+func ReadUptime() (time.Duration, error) {
+	var uptime unix.Timespec
+	if err := clockGettime(unix.CLOCK_UPTIME, &uptime); err != nil {
+		return 0, err
+	}
+	return time.Duration(unix.TimespecToNsec(uptime)), nil
+}