Update releases.md (#1817)

3.2 release!

Author: tacman

extra/releases.md

@@ -7,7 +7,7 @@ For example:
 
 - version 3.0 has been released on 15 September, 2022;
 - version 3.1 has been released on 23 January, 2023;
-- version 3.2 will be released on September, 2023;
+- version 3.2 has been released on 12 October, 2023;
 - version 3.3 will be released on March, 2024;
 - versions 3.4 and 4.0 will be released on September, 2024.