BUG #18668: [Windows] September 2024 releases (17.0, 16.4, etc) all include older libiconv-2.dll

The following bug has been logged on the website:

Bug reference:      18668
Logged by:          James Scott
Email address:      james.scott@hpe.com
PostgreSQL version: 17.0
Operating system:   Windows
Description:

All of the September 2024 releases (17.0, 16.4, etc) all include
libiconv-2.dll version 1.15. This is a regression from the 1.17 version
which has been included since PostgreSQL 11 at least. 

This appears to be the case in both the -binaries.zip and the Windows
installer. 

Per the installer source at
https://github.com/EnterpriseDB/edb-installers/blob/REL-17/server/packages-win64.txt,
it appears that the intention is to continue bundling 1.17. 

Perhaps the transition in
https://github.com/EnterpriseDB/edb-installers/commit/8ec613dbfb52430101804244984e201e2cbfdbc0
created an opportunity for an older, cached version to be included? 

To be clear, PostgreSQL seems to work just fine with the older version of
the DLL. I noted it when updating an embedded version of the -binaries
package, and wanted to give your build environment folks a chance to find
the problem while it's benign. 

Thanks!