Remove the SQLAlchemy session at the end of the process function

This fixes a bug where the process function fails to update the database when setting the task status to `reported` if the pebble process had previously processed the task.

By removing the session after processing, the next task that runs in the same process will grab a new session and will be forced to pull new objects from the database. Preventing any data inconsistencies.

utils/process.py

@@ -171,6 +171,12 @@ def process(
 
     log.removeHandler(per_analysis_handler)
 
+    # Remove the SQLAlchemy session to ensure the next task pulls objects from
+    # the database, instead of relying on a potentially outdated object cache.
+    # Stale data can prevent SQLAlchemy from querying the database or issuing
+    # statements, resulting in unexpected errors and inconsistencies.
+    db.session.remove()
+
 
 def init_worker():
     signal.signal(signal.SIGINT, signal.SIG_IGN)