clang-format: update whitespace penalty

clang-format-15 seems to end up with a slightly different whitespace
break than clang-format-14 did.  Tweak the PenaltyBreakAssignment
to favor not breaking as often, which allows the two to be more
consistent.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I49826e2011bce317b6b82dc985ddd35fa6eef2cb
diff --git a/example/get-all-properties.cpp b/example/get-all-properties.cpp
index 53d2466..8b01258 100644
--- a/example/get-all-properties.cpp
+++ b/example/get-all-properties.cpp
@@ -22,8 +22,8 @@
         ioc_(ioc),
         bus_(bus), objServer_(objServer)
     {
-        demo_ =
-            objServer_.add_unique_interface(demoObjectPath, demoInterfaceName);
+        demo_ = objServer_.add_unique_interface(demoObjectPath,
+                                                demoInterfaceName);
 
         demo_->register_property_r<std::string>(
             propertyGrettingName, sdbusplus::vtable::property_::const_,