pick up latest fftm

Signed-off-by: Chengxuan Xing <chengxuan.xing@kaleido.io>

Author: Chengxuan

go.mod

@@ -101,4 +101,4 @@ require (
 )
 
 // Pin kaleido-io/firefly-transaction-manager branch lightweight-confirmation-tracking until merged upstream.
-replace github.com/hyperledger/firefly-transaction-manager => github.com/kaleido-io/firefly-transaction-manager v0.0.0-20260421111941-f20dee0fc832
+replace github.com/hyperledger/firefly-transaction-manager => github.com/kaleido-io/firefly-transaction-manager v0.0.0-20260421133421-8999101bd7c7

go.sum

@@ -113,8 +113,8 @@ github.com/jarcoal/httpmock v1.2.0 h1:gSvTxxFR/MEMfsGrvRbdfpRUMBStovlSRLw0Ep1bww
 github.com/jarcoal/httpmock v1.2.0/go.mod h1:oCoTsnAz4+UoOUIf5lJOWV2QQIW5UoeUI6aM2YnWAZk=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
-github.com/kaleido-io/firefly-transaction-manager v0.0.0-20260421111941-f20dee0fc832 h1:zkq96Tp9IfMa7isUBfXP0OS3gvddx8+vDlnqGDTX+tk=
-github.com/kaleido-io/firefly-transaction-manager v0.0.0-20260421111941-f20dee0fc832/go.mod h1:1kbYt8ofDXqfwC02vwV/HoOjmiv0IuT9UkJ//bbrliE=
+github.com/kaleido-io/firefly-transaction-manager v0.0.0-20260421133421-8999101bd7c7 h1:aJtNpvO2Lwf9oMYtjrroa2pJUmNbXvkklI4WjbT0r+A=
+github.com/kaleido-io/firefly-transaction-manager v0.0.0-20260421133421-8999101bd7c7/go.mod h1:1kbYt8ofDXqfwC02vwV/HoOjmiv0IuT9UkJ//bbrliE=
 github.com/karlseguin/ccache v2.0.3+incompatible h1:j68C9tWOROiOLWTS/kCGg9IcJG+ACqn5+0+t8Oh83UU=
 github.com/karlseguin/ccache v2.0.3+incompatible/go.mod h1:CM9tNPzT6EdRh14+jiW8mEF9mkNZuuE51qmgGYUB93w=
 github.com/kisielk/sqlstruct v0.0.0-20201105191214-5f3e10d3ab46/go.mod h1:yyMNCyc/Ib3bDTKd379tNMpB/7/H5TjM2Y9QJ5THLbE=