Fix CI failures for fedora bootc and ostree composer-cli depsolve conflict

[say-paul]

https://github.com/fedora-iot/greenboot-rs/actions/runs/31021970675/job/92360810239?pr=190

1. Fedora bootc - its running the old binary
2. Rhel 9.8-ostree - composer-cli conflict to install the main stream and the PR build of green boot.

Originally posted by @say-paul in #190 (review)

Note: Fedora ostree test failures are cause by error: operation failed: swtpm died and reported: libvirt: error : cannot execute binary /usr/bin/swtpm: Permission denied, the error is already being fixed [1], [2].

[1] https://bugzilla.redhat.com/show_bug.cgi?id=2511086
[2] https://bodhi.fedoraproject.org/updates/FEDORA-2026-aa55df3280

[miabbott]

I opened a PR (#193 ) to drop the use of vTPM in the tests. It will get us past the TPM errors we are currently seeing and (IMO) it's a general improvement since we don't need the use of any TPM functions for greenboot or the tests

[say-paul]

Seems 565377c addresses all except the fedora one.