Add automation to detect JSON schema breakages

[wagoodman]

Today we use chronicle to generate release notes based off of labels on PRs and issues. It would be great to add automation that can auto-label PRs with schema-specific changes. Take for instance this PR https://github.com/anchore/syft/releases/tag/v0.85.0 .
The breaking-change label was manually added to the #1846 but could have been automatically added by automation when a new JSON schema file was added in schema/json and compared the new version to the last version. Adding both the breaking-change and something that indicates the json schema was changed such as a new new-json-schema would be nice. With some changes to chronicle we could add another section that denotes the specific changes that changed the json schema.