chore: use synchronous batch span

This makes sure the spans are emitted at the end of the test and not during the
run, making it easier to parse.

Change-Id: I37f754f6cc1a48946f371999c9e3da59fcd35a3c

pytest_mergify/tracer.py

@@ -75,7 +75,7 @@ def __post_init__(self) -> None:
 
         if os.environ.get("PYTEST_MERGIFY_DEBUG"):
             self.exporter = export.ConsoleSpanExporter()
-            span_processor = export.SimpleSpanProcessor(self.exporter)
+            span_processor = SynchronousBatchSpanProcessor(self.exporter)
         elif utils.strtobool(os.environ.get("_PYTEST_MERGIFY_TEST", "false")):
             from opentelemetry.sdk.trace.export.in_memory_span_exporter import (
                 InMemorySpanExporter,