sdbusplus: use shorter type aliases

The sdbusplus headers provide shortened aliases for many types.
Switch to using them to provide better code clarity and shorter
lines.  Possible replacements are for:
  * bus_t
  * exception_t
  * manager_t
  * match_t
  * message_t
  * object_t
  * slot_t

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I20ad4fc3a2c6d8cb342156bd3e8d05f3a22d3eb8
diff --git a/tests/src/test_report.cpp b/tests/src/test_report.cpp
index 14239a9..8be6397 100644
--- a/tests/src/test_report.cpp
+++ b/tests/src/test_report.cpp
@@ -1093,7 +1093,7 @@
         initMetricMocks(defaultParams().metricParameters());
     }
 
-    void monitorProc(sdbusplus::message::message& msg)
+    void monitorProc(sdbusplus::message_t& msg)
     {
         std::string iface;
         std::vector<std::pair<std::string, std::variant<Readings>>>