Fix for generate script (#974)

This PR fixes the 15 variables and script.

Author: Andriciuc

.github/workflows/generate-release-metadata.yml

@@ -2,19 +2,19 @@
 # See also mkdocs.yml plugins.with-pdf.cover_subtitle and output_path
 
 
-release: 2026-05-14
-pgversion: 2026-05-14
-dockertag: 2026-05-14
-pgsmversion: 2026-05-14
+release: 'release-notes-v15.18'
+pgversion: '15'
+dockertag: '15.18'
+pgsmversion: '2.3.2'
 
 
-date: 2026-05-14
-
-  15_17: 2026-05-14
-  15_15: 2026-05-14
-  15_14: 2026-05-14
-  15_13_1: 2026-05-14
-  15_13: 2026-05-14
-  15_12: 2026-05-14
-  15_10: 2026-05-14
-  15_8: 2026-05-14
+date:
+  15_18: 2026-05-14
+  15_17: 2026-02-26
+  15_15: 2025-12-03
+  15_14: 2025-09-15
+  15_13_1: 2025-07-14
+  15_13: 2025-06-30
+  15_12: 2025-03-03
+  15_10: 2024-12-05
+  15_8: 2024-09-10