Please add option to encrypt the <value> of <connection-property> defined in a data source templates.
For example, we want to encrypt "private_key_file_pwd" used to connect to snowflake using key pair authentication.
<connection-properties>
...
<connection-property>
<key>private_key_file</key>
<value>C:\path\rsa_key.p8</value>
</connection-property>
<connection-property>
<key>private_key_file_pwd</key>
<value>mypassword</value>
</connection-property>
</connection-properties>