Update the 2023 Colorado Sales tax refund (#5291)

Fixes #5290

changelog_entry.yaml

@@ -0,0 +1,4 @@
+- bump: patch
+  changes:
+    fixed:
+    - Colorado 2023 sales tax refund.

policyengine_us/parameters/gov/states/co/tax/income/credits/sales_tax_refund/amount/amount.yaml

@@ -1,13 +1,13 @@
 description: Colorado provides a flat sales tax refund credit of this amount.
 values:
-  2023-01-01: 661
+  2023-01-01: 800
 
 metadata:
   period: year
   unit: year 
   label: Colorado sales tax refund credit flat amount
   reference:
-    - title: 2023 Colorado Individual Income Tax Filing Guide
-      href: https://leg.colorado.gov/sites/default/files/documents/2023A/bills/fn/2023a_hb1311_00.pdf#page=3
+    - title: 2023 Colorado Individual Tax Filing Guide 104 Book, Line 34
+      href: https://tax.colorado.gov/sites/tax/files/documents/Book0104_2023.pdf#page=9
     - title: Colorado General Assembly HB23-1311 Identical Temporary TABOR Refund
       href: https://leg.colorado.gov/bills/hb23-1311#:~:text=The%20act%20creates%20a%20new,2022%2D23%20state%20fiscal%20year

policyengine_us/tests/policy/baseline/gov/states/co/tax/income/credits/sales_tax_refund/co_sales_tax_refund.yaml

@@ -32,7 +32,7 @@
     co_sales_tax_refund_eligible: true
     filing_status: SINGLE
   output:
-    co_sales_tax_refund: 661
+    co_sales_tax_refund: 800
 
 - name: Joint calculation
   period: 2022
@@ -51,3 +51,20 @@
     filing_status: SEPARATE
   output:
     co_sales_tax_refund: 234
+
+- name: Integration test
+  period: 2023
+  input:
+    people:
+      person1:
+        age: 40
+      person2:
+        age: 40
+    tax_units:
+      tax_unit:
+        members: [person1, person2]
+        co_modified_agi: 60_001
+        co_sales_tax_refund_eligible: true
+        filing_status: JOINT
+  output:
+    co_sales_tax_refund: 1_600