new versioning strategy

[Ellenn-A]

Pull Request

Checklist

• Have you read Digital Catapult's Code of Conduct?
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.

PR Type

Please delete options that are irrelevant.

• Bug Fix
• Chore
• Feature
• Documentation Update
• Code style update (formatting, local variables)
• Breaking Change (fix or feature that would cause existing functionality to change)

Linked tickets

SQNC-73

High level description

Introduced new versioning strategy agreed in SQNC-41.

Detailed description

The agreed new strategy uses a single version set in the Cargo.toml at root level. this is then used by all the other Cargo.tomls.
We are from now on also incrementing spec_version by one e.g 1131 -> 1132 as part of a version bump.
Made a line change in check-version.sh to obtain current version from the root Cargo.toml instead of one in node.

Describe alternatives you've considered

As per SQNC-41, we have considered per-crate versioning strategy and a hybrid versioning approach. We have decided to proceed with Unified versioning as the crates are tightly coupled.

Operational impact

Additional context

[github-actions]

This PR updates the following pallets - they may also require updates to their extrinsic weights:
process-validation symmetric-key utxo-nft

For the author and any reviewers:

• consider whether the changes could significantly affect the weight of any extrinsics
• consider whether benchmarks need updating to correctly cover weight variations over inputs

For a guide on running benchmarks to update weights see calculating weights

[mattdean-digicatapult]

I think we're missing a couple of Cargo.toml files. Notably:

• https://github.com/digicatapult/sqnc-node/blob/main/node/Cargo.toml
• https://github.com/digicatapult/sqnc-node/blob/main/runtime/types/Cargo.toml