Release 1.39.0

• Add permissions for issues in reviewdog workflow (0efad80)
• fix(cashflow): add back in comma (6ae9cc5)
• fix(cashflow): fix groupby (66fc3a3)
• Apply suggestions from code review (e5afe0b)
• Update server/controllers/finance/reports/cashflow/index.js (7e7bf17)
• perf(report): improve cashflow performance (12a5de0)
• perf(report): improve cashflow performance (6b3540e)
• fix(inventory): call hidden flag 'hidden' (33a727a)
• feat(inventory): enhance item retrieval with hidden status (8304578)
• feat(db): add 'hidden' column to inventory table (96ff4aa)
• deps: bump dependencies (b4ca970)
• feature(invoicing-fees): display associated debtor groups in fees list (3e51973)
• fix(All requested changes have been completed) (#8538) (49bdae6)
• refactor(roles): move route logic into controller (5eacd8e)
• feat(roles): unify permissions/actions modal (4b026ee)
• Apply suggestions from code review (5688835)
• fix(tests): ensure that FY 2026 is added (5cb232a)