fix: generate diff - set branch for the change set

[mfiedorowicz]

This pull request includes a change to improve naming consistency and functionality in the _post method of netbox_diode_plugin/api/views.py. The key update involves renaming variables and updating logic to reflect the use of schema_id instead of id for branch identification.

Changes to branch identification logic:

• Renamed branch_id to branch_schema_id to align with the use of schema_id for branch identification. Updated all relevant references in the _post method.
• Modified the logic to retrieve a branch using schema_id instead of id and updated the result.change_set.branch structure to include schema_id and name.
• Adjusted the error logging to sanitize and log branch_schema_id instead of branch_id when a branch does not exist.

[github-actions]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
2794	2600	93%	0%	🟢

New Files

No new covered files...

Modified Files

File	Coverage	Status
netbox_diode_plugin/api/views.py	79%	🟢
TOTAL	79%	🟢

updated for commit: 16e2a14 by action🐍