pgAdmin 4 v6.15 Released

The pgAdmin Development Team is pleased to announce pgAdmin 4 version 6.15. This release of pgAdmin 4 includes 35 bug fixes and new features. For more details please see the [release notes](https://www.pgadmin.org/docs/pgadmin4/6.15/release_notes_6_15.html).

pgAdmin is the leading Open Source graphical management tool for PostgreSQL. For more information, please see [the website](https://www.pgadmin.org/).
Notable changes in this release include:

### Features:
* Added support for IAM token based authentication for AWS RDS or Azure DB.

By using this feature, database connection starts with token-based authentication for AWS RDS or Azure DB. To achieve this we have added a password command option.

* Added support to specify the background fill color to the table nodes in the ERD tool.

* Allow reordering table columns using drag and drop in ERD Tool.

* Add option to generate SQL with DROP table DDL in ERD Tool.

* Added high availability options to AWS deployment.

* Expose the Gunicorn limit_request_line parameter in the container, with the default set to the maximum of 8190.

### Bugs/Housekeeping:
* Fixed an exception that occurs while taking backup and SSL certificates/keys are not found in the specified path.
* Ensure that the path to the psqlrc file is correct when multiple users open the PSQL tool at the same time.
* Ensure that the query tool creates a new tab with the appropriate user when pressing Alt+Shift+Q.
* Added the close button for all the notifications of the notistack.
* Ensure that the scroll position should be preserved for the result set in the query tool on tab change.
* Fixed an issue where the prompt is not visible when clicking on the 'save results to file' button on the large data.
* Fixed error occurring while LDAP authentication for a user with multiple email attributes.
* Fixed the cross-site scripting vulnerability.
* Ensure that the login form is hidden if the authentication source is OAuth2 or Kerberos.
* Fixed an issue where the password recovery link was not working.

Builds for Windows and macOS are available now, along with a Python Wheel, Docker Container, RPM, DEB Package, and source code tarball from the [tarball area](https://www.pgadmin.org/download/).