errors: Use non-deprecated namespaces

The error namespaces have been updated. Reference:
https://gerrit.openbmc.org/c/openbmc/sdbusplus/+/66308
https://gerrit.openbmc.org/c/openbmc/phosphor-logging/+/66463

Tested: Compiled with the SDBUSPP_REMOVE_DEPRECATED_NAMESPACE option.

Change-Id: Idd1ca6f14635039bd8bd2f34d69afd3e97588648
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/download_manager.cpp b/download_manager.cpp
index 1197851..71a5255 100644
--- a/download_manager.cpp
+++ b/download_manager.cpp
@@ -24,14 +24,14 @@
 namespace manager
 {
 
-using namespace sdbusplus::xyz::openbmc_project::Common::Error;
+using namespace sdbusplus::error::xyz::openbmc_project::common;
 PHOSPHOR_LOG2_USING;
 using namespace phosphor::logging;
 namespace fs = std::filesystem;
 
 void Download::downloadViaTFTP(std::string fileName, std::string serverAddress)
 {
-    using Argument = xyz::openbmc_project::Common::InvalidArgument;
+    using Argument = xyz::openbmc_project::common::InvalidArgument;
 
     // Sanitize the fileName string
     if (!fileName.empty())