Update versioning docs in CONTRIBUTING.md

[heaths]

Also fixes a few post-GA versioning issues I found in the course of updating docs.

[Copilot]

Pull request overview

Updates the repository’s versioning guidance and aligns dependency configuration/validation with the documented post-GA workflow (workspace-inherited dependencies for released crates, and explicit path+version when needed).

Changes:

• Updated CONTRIBUTING.md “Versions” section to clarify workspace vs path dependency usage.
• Tweaked eng/scripts/verify-dependencies.rs output and formatting around dependency inheritance checks.
• Adjusted workspace/dependent crate manifests to address post-GA dependency/versioning (notably azure_storage_blob and Event Hubs checkpoint store dependencies).

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
sdk/eventhubs/azure_messaging_eventhubs_checkpointstore_blob/Cargo.toml	Switches Event Hubs dependency from workspace inheritance to explicit path+version.
eng/scripts/verify-dependencies.rs	Improves target-section formatting and updates guidance text/link when non-inherited deps are found.
CONTRIBUTING.md	Clarifies dependency/versioning practices and adds a reference link.
Cargo.toml	Updates workspace dependency declarations (removes Event Hubs entry; adjusts azure_storage_blob workspace dep).
Cargo.lock	Reflects updated dependency resolution (azure_storage_blob 1.0.0 pulled from crates.io).