Fix error during processing db connection in workbench

[ufoscw]

Is your feature request related to a problem? Please describe.
Currently, the release_mode of the hibernate connection is on_close (default), which keeps the connection until the hibernate session is closed.
There is a risk of error if it does not match db timeout setting.
Also, resources are wasted due to connection.
So we need to change it to after_transaction to release it at the end of the transaction.

Describe the solution you'd like
add properties to application.yaml

spring:
  jpa:
    properties:
      hibernate:
        connection:
          release_mode: after_transaction

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.