vendor: Bump gomatrixserverlib to pull in CreateMediaDownloadRequest

vendor/manifest

@@ -98,7 +98,7 @@
 		{
 			"importpath": "github.com/matrix-org/gomatrixserverlib",
 			"repository": "https://github.com/matrix-org/gomatrixserverlib",
-			"revision": "c396ef3cc1e546729f7052f1f48e345cc59269f4",
+			"revision": "b1dfcb3b345cc8410f1a03fec0a1ffe6bd002dcd",
 			"branch": "master"
 		},
 		{

vendor/src/github.com/matrix-org/gomatrixserverlib/client.go

@@ -220,3 +220,14 @@ func (fc *Client) LookupServerKeys(
 	}
 	return result, nil
 }
+
+// CreateMediaDownloadRequest creates a request for media on a homeserver and returns the http.Response or an error
+func (fc *Client) CreateMediaDownloadRequest(matrixServer ServerName, mediaID string) (*http.Response, error) {
+	requestURL := "matrix://" + string(matrixServer) + "/_matrix/media/v1/download/" + string(matrixServer) + "/" + mediaID
+	resp, err := fc.client.Get(requestURL)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}