default.xml: Bump meta-virtualization revision

* 5be5485 : skopeo: Mark CVE-2019-10214 as fixed - Andrei Gherzan
* 6063ad1 : podman: Rename podman-rootless.conf sysctl file to aid overrides - Andrei Gherzan

Signed-off-by: Pavel Zhukov <pavel.zhukov@huawei.com>