deps: switch to base64 via simplexmq (#3957)

* deps: switch to base64 via simplexmq

* update error text

* update nix

* set simplexmq to master

* update paths

tests/ChatClient.hs

@@ -413,6 +413,8 @@ serverCfg =
       allowNewQueues = True,
       -- server password is disabled as otherwise v1 tests fail
       newQueueBasicAuth = Nothing, -- Just "server_password",
+      controlPortUserAuth = Nothing,
+      controlPortAdminAuth = Nothing,
       messageExpiration = Just defaultMessageExpiration,
       inactiveClientExpiration = Just defaultInactiveClientExpiration,
       caCertificateFile = "tests/fixtures/tls/ca.crt",
@@ -448,6 +450,8 @@ xftpServerConfig =
       allowedChunkSizes = [kb 64, kb 128, kb 256, mb 1, mb 4],
       allowNewFiles = True,
       newFileBasicAuth = Nothing,
+      controlPortUserAuth = Nothing,
+      controlPortAdminAuth = Nothing,
       fileExpiration = Just defaultFileExpiration,
       fileTimeout = 10000000,
       inactiveClientExpiration = Just defaultInactiveClientExpiration,