freeze hledger-iadd at 1.3.21 for lts-24

Author: DanBurton

build-constraints/lts-24-build-constraints.yaml

@@ -3931,7 +3931,7 @@ packages:
         - ImpSpec ^>= 0.1.0.0
 
     "Hans-Peter Deifel <[email protected]> @hpdeifel":
-        - hledger-iadd ^>= 1.3.21
+        - hledger-iadd == 1.3.21 # 1.3.22 requires hledger-lib >= 1.50, lts is on hledger-lib-1.43.*
 
     "Roy Levien <[email protected]> @orome":
         - crypto-enigma < 0 # 0.1.1.6 compile fail https://github.com/orome/crypto-enigma-hs/issues/36