Merge branch 'codex/fix-scottish-rate-references' of https://github.com/PolicyEngine/policyengine-uk into codex/merge-1549

Author: MaxGhenis

policyengine_uk/parameters/gov/hmrc/income_tax/rates/scotland/rates.yaml

@@ -93,5 +93,9 @@ metadata:
       href: https://www.gov.uk/government/publications/rates-and-allowances-income-tax/income-tax-rates-and-allowances-current-and-past
     - title: Scottish Budget 2025-26 - Higher rate threshold freeze
       href: https://www.gov.scot/publications/scottish-budget-2025-26/
+    - title: Scottish Income Tax 2026 to 2027
+      href: https://www.gov.scot/publications/scottish-income-tax-rates-and-bands/pages/2026-to-2027/
+    - title: Scottish Budget 2026-27
+      href: https://www.gov.scot/publications/scottish-budget-2026-2027/pages/4/
     - title: Scottish Fiscal Commission - Scotland's Economic and Fiscal Forecasts January 2026
       href: https://fiscalcommission.scot/wp-content/uploads/2026/01/Scotlands-Economic-and-Fiscal-Forecasts-January-2026-revised-13-01-2026.pdf