GHA: bump protos version

[wilson-cl]

This PR introduces GitHub Actions workflows to automate the process of bumping the chainlink-protos/cre/go dependency and creating release tags for the EVM capability module and SDK.

Changes

New Workflows

.github/workflows/bump-chainlink-protos.yml

• Automates bumping the github.com/smartcontractkit/chainlink-protos/cre/go dependency in the EVM capability module
• Regenerates protobuf and SDK code via make clean-generate
• Calculates next version tags (auto-increment or explicit)
• Creates a PR with version labels for post-merge tagging
• Supports both manual trigger (workflow_dispatch) and external trigger (repository_dispatch) for cross-repo automation

.github/workflows/create-release-tags.yml

• Creates git tags for EVM capability (capabilities/blockchain/evm/vX.X.X) and SDK (vX.X.X) releases
• Automatically triggered when bump-chainlink-protos PRs are merged
• Extracts version info from PR labels or accepts explicit inputs
• Supports manual and external triggers for flexibility

New Script

script/calculate-next-versions.sh

• Calculates next version tags based on existing git tags
• Supports explicit version overrides or auto-increment:
  • EVM: Increments beta number (v1.0.0-beta.1 → v1.0.0-beta.2) or patch version
  • SDK: Increments patch version (v1.1.1 → v1.1.2)
• Outputs versions for GitHub Actions consumption

Example Flow

1. manual trigger

2. result - version, PR, and version tags

3. PR created - tags and files

4. Tagging Version triggered by PR merged

[github-actions]

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