rpcrt4/tests: Increase some timeouts.

dlls/rpcrt4/tests/cstub.c

@@ -1383,7 +1383,7 @@ static void test_delegated_methods(void)
     ready_event = CreateEventA(NULL, TRUE, FALSE, "wine_cstub_test_server_ready");
 
     process = create_process("server");
-    ok(!WaitForSingleObject(ready_event, 1000), "wait failed\n");
+    ok(!WaitForSingleObject(ready_event, 5000), "wait failed\n");
 
     hr = NdrDllGetClassObject(&CLSID_test_ps, &IID_IPSFactoryBuffer, (void **)&ps,
         &aProxyFileList, &CLSID_test_ps, &gPFactory);

dlls/rpcrt4/tests/server.c

@@ -2290,7 +2290,7 @@ static void run_server(HANDLE ready_event)
     ret = SetEvent(ready_event);
     ok(ret, "SetEvent failed: %u\n", GetLastError());
 
-    ret = WaitForSingleObject(stop_event, 1000);
+    ret = WaitForSingleObject(stop_event, 5000);
     ok(WAIT_OBJECT_0 == ret, "WaitForSingleObject\n");
 
     status = RpcMgmtWaitServerListen();