feat: Added Malawi kwacha to currency list (#12440)

* Add Malawi kwacha currency

* fix failing currency tests

---------

Co-authored-by: Stevche Radevski <sradevski@live.com>

integration-tests/http/__tests__/currency/admin/currency.spec.ts

@@ -22,7 +22,7 @@ medusaIntegrationTestRunner({
         )
 
         expect(response.status).toEqual(200)
-        expect(response.data.currencies).toHaveLength(120)
+        expect(response.data.currencies).toHaveLength(121)
         expect(response.data.currencies).toEqual(
           expect.arrayContaining([
             expect.objectContaining({