Major version bump

[nathanwoctopusdeploy]

Background

This PR is to bump the major version of Halibut prior to sync Halibut being removed

It will be merged with the commit message +semver: major

[sc-63505]

How to review this PR

Quality :heavy_check_mark:

Pre-requisites

• [ ] I have read How we use GitHub Issues for help deciding when and where it's appropriate to make an issue.
• [ ] I have considered informing or consulting the right people, according to the ownership map.
• [ ] I have considered appropriate testing for my change.

[shortcut-integration[bot]]

This pull request has been linked to Shortcut Story #63505: Create Halibut LTS Release Branch.