Update zbus requirement from 4 to 5

[dependabot[bot]]

Updates the requirements on zbus to permit the latest version.

Release notes

Sourced from zbus's releases.

🔖 zbus 5.0.1

• 📌 Don't pin zvariant_utils dep. We don't always release zvariant_utils together with other crates, so unlike the macros crates, the versions don't need to be tied together. This will also allow us to bring zvariant_utils improvements to users without having to release all dependent packages as well.

Commits

• 6201c05 🔖 zb,zm: Release 5.0.1
• 405a432 🔖 zv,zd: Release 5.0.1
• 1850dac 🔖 Release 3.0.1
• 992e5c2 📌 zv,zd,zm: Don't pin zvariant_utils dep
• c36d30f Merge pull request #1090 from zeenix/port-to-winnow
• df6b4e1 ⬆️ zd,zm: Update proc-macro-crate to 3.2
• 413f97e ➖ zu: Drop now unneeded nom dependency
• 1539496 ⚡️ zu: Switch from nom to winnow for signature parsing
• d06ea47 ➕ zu: Add a direct dep on winnow
• 32bd4d0 🧐 zv: Benchmark for signature parsing
• Additional commits viewable in compare view

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