Several build fixes

Code/Tools/TestImpactFramework/Runtime/Code/Source/Process/Scheduler/TestImpactProcessScheduler.cpp

@@ -230,7 +230,7 @@ namespace TestImpact
             processInFlight.m_process = LaunchProcess(AZStd::move(processInfo));
             processInFlight.m_startTime = createTime;
         }
-        catch (ProcessException& e)
+        catch ([[maybe_unused]] ProcessException& e)
         {
             AZ_Warning("ProcessScheduler", false, e.what());
             createResult = LaunchResult::Failure;

Code/Tools/TestImpactFramework/Runtime/Code/Source/TestEngine/Enumeration/TestImpactTestEnumerator.cpp

@@ -169,7 +169,7 @@ namespace TestImpact
                             WriteFileContents<TestEngineException>(SerializeTestEnumeration(enumeration.value()), jobInfo->GetCache()->m_file);
                         }
                     }
-                    catch (const Exception& e)
+                    catch ([[maybe_unused]] const Exception& e)
                     {
                         AZ_Warning("Enumerate", false, e.what());
                         enumerations[jobId] = AZStd::nullopt;