fix(deps): update module github.com/twmb/franz-go to v1.20.4

Author: renovate[bot]

go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.23.2
 	github.com/stretchr/testify v1.11.1
-	github.com/twmb/franz-go v1.20.3
+	github.com/twmb/franz-go v1.20.4
 	github.com/twmb/franz-go/pkg/kadm v1.17.1
 	github.com/twmb/franz-go/pkg/kmsg v1.12.0
 	github.com/twmb/franz-go/pkg/sasl/kerberos v1.1.0

go.sum

@@ -93,8 +93,8 @@ github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 github.com/twmb/franz-go v1.7.0/go.mod h1:PMze0jNfNghhih2XHbkmTFykbMF5sJqmNJB31DOOzro=
-github.com/twmb/franz-go v1.20.3 h1:gjwZwZmmvo/t7mxyj6frxDORVxsqrycXPnDrpkXldfY=
-github.com/twmb/franz-go v1.20.3/go.mod h1:YCnepDd4gl6vdzG03I5Wa57RnCTIC6DVEyMpDX/J8UA=
+github.com/twmb/franz-go v1.20.4 h1:1wTvyLTOxS0oJh5ro/DVt2JHVdx7/kGNtmtFhbcr0O0=
+github.com/twmb/franz-go v1.20.4/go.mod h1:YCnepDd4gl6vdzG03I5Wa57RnCTIC6DVEyMpDX/J8UA=
 github.com/twmb/franz-go/pkg/kadm v1.17.1 h1:Bt02Y/RLgnFO2NP2HVP1kd2TFtGRiJZx+fSArjZDtpw=
 github.com/twmb/franz-go/pkg/kadm v1.17.1/go.mod h1:s4duQmrDbloVW9QTMXhs6mViTepze7JLG43xwPcAeTg=
 github.com/twmb/franz-go/pkg/kmsg v1.2.0/go.mod h1:SxG/xJKhgPu25SamAq0rrucfp7lbzCpEXOC+vH/ELrY=