Add principal field to indigo adapter

[actlikewill]

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[github-actions]

Test Results

1 tests   - 47   1 ✅  - 47   0s ⏱️ -13s
1 suites  - 12   0 💤 ± 0 
1 files    - 12   0 ❌ ± 0 

Results for commit d18f742. ± Comparison against base commit 884257b.

This pull request removes 48 and adds 1 tests. Note that renamed tests count towards both.

peachjam.tests.test_admin.TestJudgmentAdmin ‑ test_add_judgment_docx_swap_pdf
peachjam.tests.test_admin.TestJudgmentAdmin ‑ test_add_judgment_pdf_swap_docx
peachjam.tests.test_bulk_import.JudgmentBulkImportTestCase ‑ test_case_number_import_without_matter_type
peachjam.tests.test_bulk_import.JudgmentBulkImportTestCase ‑ test_case_numbers_with_matter_type
peachjam.tests.test_bulk_import.JudgmentBulkImportTestCase ‑ test_import_with_taxonomy
peachjam.tests.test_bulk_import.JudgmentBulkImportTestCase ‑ test_judgment_bulk_import
peachjam.tests.test_bulk_import.JudgmentBulkImportTestCase ‑ test_source_file_prefers_docx_over_pdf
peachjam.tests.test_citations.CitationAnalyserTestCase ‑ test_delete_citations
peachjam.tests.test_citations.CitationAnalyserTestCase ‑ test_delete_citations_should_not_change_akn
peachjam.tests.test_citations.CitationAnalyserTestCase ‑ test_pdf_extractions
…

africanlii.tests.test_views.AfricanliiViewsTest ‑ test_homepage

♻️ This comment has been updated with latest results.