Bump GMSL to pull in v12 sorting bugfix (#3633)

Also keeps processing PDUs even if one of them was bad c.f
element-hq/synapse#7543 suspect moderation
tooling is causing invalid PDUs to be sent, meaning this is now expected
to fail:
```
FAILURE: #655: Server rejects invalid JSON in a version 6 room
```

Author: kegsay

go.mod

@@ -25,7 +25,7 @@ require (
 	github.com/matrix-org/dugong v0.0.0-20210921133753-66e6b1c67e2e
 	github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91
 	github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530
-	github.com/matrix-org/gomatrixserverlib v0.0.0-20250811193806-b7e0e0824751
+	github.com/matrix-org/gomatrixserverlib v0.0.0-20250813123338-6029db28e244
 	github.com/matrix-org/pinecone v0.11.1-0.20230810010612-ea4c33717fd7
 	github.com/matrix-org/util v0.0.0-20221111132719-399730281e66
 	github.com/mattn/go-sqlite3 v1.14.28

go.sum

@@ -239,6 +239,8 @@ github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530 h1:kHKxCOLcHH8
 github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530/go.mod h1:/gBX06Kw0exX1HrwmoBibFA98yBk/jxKpGVeyQbff+s=
 github.com/matrix-org/gomatrixserverlib v0.0.0-20250811193806-b7e0e0824751 h1:x1pC7Nt1Qb24q9WtPybMHWo2uVFTzCKtlUAzarju8bk=
 github.com/matrix-org/gomatrixserverlib v0.0.0-20250811193806-b7e0e0824751/go.mod h1:b6KVfDjXjA5Q7vhpOaMqIhFYvu5BuFVZixlNeTV/CLc=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20250813123338-6029db28e244 h1:7pKFuVhn2JkrQBhH14fsIbTd/uBjC5Xu6aIo13oMBEI=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20250813123338-6029db28e244/go.mod h1:b6KVfDjXjA5Q7vhpOaMqIhFYvu5BuFVZixlNeTV/CLc=
 github.com/matrix-org/pinecone v0.11.1-0.20230810010612-ea4c33717fd7 h1:6t8kJr8i1/1I5nNttw6nn1ryQJgzVlBmSGgPiiaTdw4=
 github.com/matrix-org/pinecone v0.11.1-0.20230810010612-ea4c33717fd7/go.mod h1:ReWMS/LoVnOiRAdq9sNUC2NZnd1mZkMNB52QhpTRWjg=
 github.com/matrix-org/util v0.0.0-20221111132719-399730281e66 h1:6z4KxomXSIGWqhHcfzExgkH3Z3UkIXry4ibJS4Aqz2Y=

internal/transactionrequest.go

@@ -134,6 +134,8 @@ func (t *TxnReq) ProcessTransaction(ctx context.Context) (*fclient.RespSend, *ut
 		}
 		event, err := verImpl.NewEventFromUntrustedJSON(pdu)
 		if err != nil {
+			/* Do not reject the entire transaction for a single bad PDU, that's dumb.
+
 			if _, ok := err.(gomatrixserverlib.BadJSONError); ok {
 				// Room version 6 states that homeservers should strictly enforce canonical JSON
 				// on PDUs.
@@ -146,7 +148,7 @@ func (t *TxnReq) ProcessTransaction(ctx context.Context) (*fclient.RespSend, *ut
 					Code: 400,
 					JSON: spec.BadJSON("PDU contains bad JSON"),
 				}
-			}
+			} */
 			util.GetLogger(ctx).WithError(err).Debugf("Transaction: Failed to parse event JSON of event %s", string(pdu))
 			continue
 		}