Fix build issues with boost 1.87

Update deprecated terminology that was removed in boost 1.87.

Change-Id: Ifa5dbbd35aa8517b16941f0f7ad5df2028ddbc1e
Signed-off-by: Jason M. Bills <jason.m.bills@linux.intel.com>
diff --git a/service/src/mainapp.cpp b/service/src/mainapp.cpp
index f7f8603..e64d52e 100644
--- a/service/src/mainapp.cpp
+++ b/service/src/mainapp.cpp
@@ -680,7 +680,7 @@
 int main()
 {
     // setup connection to dbus
-    boost::asio::io_service io;
+    boost::asio::io_context io;
     auto conn = std::make_shared<sdbusplus::asio::connection>(io);
     pfr::stateTimer = std::make_unique<boost::asio::steady_timer>(io);
     pfr::initTimer = std::make_unique<boost::asio::steady_timer>(io);