default.xml: Bump meta-virtualization revision

* 9275371 : moby: update to v20.10.21 - Adrian Freihofer
* 751ddf3 : docker/moby: use generic DOCKER_COMMIT in do_compile - Bruce Ashfield
* 51833d0 : docker: add seccomp to default packageconfig settings - Bruce Ashfield
* b4b38e8 : docker: add mobyproject:moby to CVE_PRODUCT - Bruce Ashfield
* 181a754 : containerd: update to v1.6.9 - Bruce Ashfield
* 9999f03 : runc-docker: update to 1.1.4-tip - Bruce Ashfield
* b0084d6 : runc: update to 1.1.4-tip - Bruce Ashfield
* 2d44f8e : docker/proxy: don't use -linkshared unconditionally - Jose Quaresma
* f67902d : containerd: fix final TMDIR references - Bruce Ashfield
* 4bc82a1 : docker: reproducibility add -trimpath to go -> $GO patches - Bruce Ashfield
* 7c811b3 : containerd: improve reproducibility - Bruce Ashfield
* 9c1fb8f : containerd: update to 1.6.8 - Bruce Ashfield
* 8bc4cf8 : docker: ensure that sysvinit and systemd are exclusive - Bruce Ashfield
* e8ff048 : docker-ce: update to 20.10.17 - Bruce Ashfield
* a38a62e : docker-moby: update to 20.10.17 - Bruce Ashfield
* e68f03f : runc-docker: update to 1.1.3 - Bruce Ashfield
* 2bc6173 : runc: update to 1.1.3 - Bruce Ashfield
* 82ea96b : runc-opencontainers: drop obsolete patch - Adrian Freihofer
* 101c60f : docker-ce: update to 20.10.16 - Bruce Ashfield
* 038dd4e : docker/moby/libnetwork: update to -latest - Bruce Ashfield
* 51317b8 : docker/moby: update to 20.10.16 - Bruce Ashfield
* a0d0f4f : upx: Use git fetcher instead of gitsm - Joakim Roubert
* 8c6de82 : upx: update to latest devel release - Bruce Ashfield
* e68bfe7 : yq: fix build - Bruce Ashfield

Signed-off-by: Marta Rybczynska <marta.rybczynska@linaro.org>