Osidb-bindings

Added
- add `.file` operation for `trackers` (OSIDB-2029)

Fixed
- request format changed from form-data to json which
prevents OSIDB serialization failures (OSIDB-2844)

Added
- Update and Create for Tracker entity
- JIRA_ACCESS_TOKEN environment variable

Fixed
- Both Bugzilla API Key and Jira Access Token are now automatically fetched
from environment variables and passed as a header

Fixed
- add workaround for Erratum shipped_dt which is marked as non-nullable
despite being nullable

Added
- add CRUD operations for Flaw CVSS scores and
package version and for Affect CVSS scores