OpenQuake Engine 3.16.7

[Antonio Ettorre (@vot4anto)]

• Upgraded Django version to version 3.2.21 with a security fix

[Michele Simionato (@micheles)]

• In case of a well known IndexError in disaggregation calculations, solved in
  newer versions of the engine, a helpful message is printed
• Backported fix on sanity check for avg_losses and aggrisk
• Backported fix to avg_gmf
• Backported a fix to oq reaggregate
• Backported fix to event based risk calculations with
  aggregate_by(parent) != aggregate_by(child)
• Backported fix to the risk_by_event exporter for some calculations
  starting from GMFs on a CSV file
• Backported fix to import_gmfs_csv, which was breaking sometimes with a
  filtered site collection