pycriu: add missing protobuf dependency

[herheliuk]

pycriu depends on protobuf to function correctly. Currently,
it raises an error if protobuf is not installed. Adding
protobuf to the dependencies ensures it is available after
installing pycriu.

Signed-off-by: Andrii Herheliuk andrii@herheliuk.com

[avagin]

LGTM. Thanks.

[rst0git]

This change causes some tests to fail:

Collecting protobuf (from pycriu==4.0)
  Downloading protobuf-6.33.0-cp39-abi3-manylinux2014_x86_64.whl.metadata (593 bytes)
Downloading protobuf-6.33.0-cp39-abi3-manylinux2014_x86_64.whl (323 kB)
Building wheels for collected packages: pycriu
  Building wheel for pycriu (pyproject.toml): started
  Building wheel for pycriu (pyproject.toml): finished with status 'done'
  Created wheel for pycriu: filename=pycriu-4.0-py3-none-any.whl size=93601 sha256=93e9c907cfeeadb4328e17cb31fcf48dbf2e280b59aceec397c1b69639c8f0fa
  Stored in directory: /tmp/pip-ephem-wheel-cache-vaf99pmu/wheels/10/d3/fb/8806d1d06158e3e4e86b5740f37869405f49aab92901d0d3eb
Successfully built pycriu
Installing collected packages: protobuf, pycriu

Successfully installed protobuf-6.33.0 pycriu-4.0
...

Files left after uninstall:
/criu/test/others/make/test.install-3023413/usr/local/lib64/python3.14/site-packages/protobuf-6.33.0.dist-info/WHEEL
/criu/test/others/make/test.install-3023413/usr/local/lib64/python3.14/site-packages/protobuf-6.33.0.dist-info/INSTALLER
/criu/test/others/make/test.install-3023413/usr/local/lib64/python3.14/site-packages/protobuf-6.33.0.dist-info/RECORD
make: *** [Makefile:4: run] Error 1

[herheliuk]

I can see that it's complaining that protobuf wasn't deleted after uninstall,
but it's not supposed to be deleted after uninstall, it's expected behaviour.

[herheliuk]

@rst0git I'll file a PR in a minute

[herheliuk]

#2790, Sorry didn't do it in the first place