ovs: Bump submodule to OVS v3.0.7.

This picks up the following relevant OVS changes:
  4198bcdfb compiler: Fix errors in Clang 17 ubsan checks.
  ec048ab62 vlog: Destroy async_append first then close log_fd.
  dbaf7271c hash, jhash: Fix unaligned access to the hash remainder.
  85285fb45 ovs-atomic: Fix inclusion of Clang header by GCC 14.
  e040f35b2 vconn: Count vconn_sent regardless of log level.
  ... and others.

Reported-at: https://mail.openvswitch.org/pipermail/ovs-dev/2024-October/417627.html
Signed-off-by: Vladislav Odintsov <vlodintsov@k2.cloud>
Signed-off-by: Dumitru Ceara <dceara@redhat.com>