connector: always use channel sender in broadcast rooms and add per-message profile

Signed-off-by: Sumner Evans <sumner.evans@automattic.com>

go.mod

@@ -10,12 +10,12 @@ require (
 	github.com/gotd/td v0.111.0
 	github.com/rs/zerolog v1.33.0
 	github.com/stretchr/testify v1.10.0
-	go.mau.fi/util v0.8.2
+	go.mau.fi/util v0.8.4-0.20250106152331-30b8c95e7d7a
 	go.mau.fi/zerozap v0.1.1
 	go.uber.org/zap v1.27.0
-	golang.org/x/exp v0.0.0-20241108190413-2d47ceb2692f
-	golang.org/x/net v0.31.0
-	maunium.net/go/mautrix v0.22.1-0.20241202131110-166ba04aae02
+	golang.org/x/exp v0.0.0-20250103183323-7d7fa50e5329
+	golang.org/x/net v0.33.0
+	maunium.net/go/mautrix v0.22.2-0.20250109192415-9748015309bd
 )
 
 require (
@@ -34,7 +34,7 @@ require (
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-sqlite3 v1.14.24 // indirect
-	github.com/petermattis/goid v0.0.0-20241025130422-66cb2e6d7274 // indirect
+	github.com/petermattis/goid v0.0.0-20241211131331-93ee7e083c43 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/rs/xid v1.6.0 // indirect
 	github.com/segmentio/asm v1.2.0 // indirect
@@ -49,10 +49,10 @@ require (
 	go.opentelemetry.io/otel/trace v1.32.0 // indirect
 	go.uber.org/atomic v1.11.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/crypto v0.29.0 // indirect
-	golang.org/x/sync v0.9.0 // indirect
-	golang.org/x/sys v0.27.0 // indirect
-	golang.org/x/text v0.20.0 // indirect
+	golang.org/x/crypto v0.32.0 // indirect
+	golang.org/x/sync v0.10.0 // indirect
+	golang.org/x/sys v0.29.0 // indirect
+	golang.org/x/text v0.21.0 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	maunium.net/go/mauflag v1.0.0 // indirect