FTPS upload now fails with 2022.04.1 (build 108575)

We have a deployment project with a step to upload a zip file to our FTPS site.
This has been working for years without a problem.
Since the upgrade to 2022.04.1 (build 108575) it is now failing.
Nothing else has changed in our environment. 
Firewall rules have not changed.
IP addresses for the BuildAgent server and FTPS site have not changed. 
FTPS credentials have not changed.

Our FTPS Server is hosted in IIS, on Windows Server 2012 R2, secured with a wildcard SSL cert acquired from a public Certificate Authority. The certificate is valid and does not expire for at least another 12 months.
Filezilla ftp client can connect to the FTPS site just fine, and has always been able to connect to the FTPS site for years.

This is what we see in the Build Log:
[16:02:01]Step 2/3: FTP Upload (FTP Upload) (1m:11s)
[16:02:02][Step 2/3] > USER *******
[16:02:02][Step 2/3] < 331 Password required
[16:02:02][Step 2/3] > PASS *******
[16:02:02][Step 2/3] < 230-Hello from FTPSITENAME
230 User logged in.
[16:02:02][Step 2/3] Starting upload via FTPS to ftp://MY_FTPS_SERVER_PUBLIC_IP_ADDRESS:990
[16:02:02][Step 2/3] > PWD
[16:02:02][Step 2/3] < 257 "/" is current directory.
[16:02:02][Step 2/3] > PWD
[16:02:02][Step 2/3] < 257 "/" is current directory.
[16:02:02][Step 2/3] > PASV
[16:02:02][Step 2/3] < 227 Entering Passive Mode (MY_FTPS_SERVER_PRIVATE_IP_ADDRESS,19,150).
[16:02:02][Step 2/3] < [Replacing site local address MY_FTPS_SERVER_PRIVATE_IP_ADDRESS with MY_FTPS_SERVER_PUBLIC_IP_ADDRESS]
[16:02:02][Step 2/3] > NLST
[16:02:02][Step 2/3] < 125 Data connection already open; Transfer starting.
[16:03:12][Step 2/3] Deployment problem: Connection reset
[16:03:12][Step 2/3] Step FTP Upload (FTP Upload) failed

Is anyone else seeing this problem?