BIS-180 - openBIS AS becomes unresponsive when performing batch sample updates

...is/sourceTest/sql/postgresql/120/049=role_assignments.tsv

...s/sourceTest/sql/postgresql/120/050=sample_properties.tsv

...eTest/sql/postgresql/120/052=sample_relationships_all.tsv

...est/sql/postgresql/120/054=sample_type_property_types.tsv

openbis/sourceTest/sql/postgresql/120/055=sample_types.tsv

openbis/sourceTest/sql/postgresql/120/056=samples_all.tsv

openbis/sourceTest/sql/postgresql/120/057=scripts.tsv

openbis/sourceTest/sql/postgresql/120/058=spaces.tsv

openbis/sourceTest/sql/postgresql/120/finish-120.sql

openbis/sourceTest/sql/postgresql/120/schema-120.sql