Sentry-kafka-schemas

Various fixes & improvements

- docs: Add some guidance about schema strictness (91) by lynnagara
- fix: Loosen transactions schema, add example (87) by lynnagara
- fix: Standardise retention_days on events and transactions (86) by lynnagara
- fix: Lint against dead schema files unreferenced by any topic (85) by untitaker
- fix(events): We seem to be getting transaction_id in end_unmerge now (79) by lynnagara
- fix: Make schema-changes workflow faster (84) by untitaker

Various fixes & improvements

- fix: Transactions context (80) by lynnagara

Various fixes & improvements

- fix: Fix metric value types across all schemas (83) by untitaker

Various fixes & improvements

- feat: Transactions topic and schema definition (77) by lynnagara
- fix: Improve rust types for ingest-metrics again (78) by untitaker
- fix: Fix filename handling of jsonschema changes (70) by untitaker

Various fixes & improvements

- feat: Rust types (74) by untitaker
- fix: Bump json-schema-diff (76) by untitaker
- ref: Update action-migrations workflow, get rid of bogus "SQL" message (75) by untitaker

Various fixes & improvements

- ref(metric alerts): Add generic metrics sub results (73) by ceorourke