revert test matrix

Author: ihalatci

packaging_automation/tests/files/get_postgres_versions_tests/postgres-matrix.yml

@@ -19,14 +19,4 @@ version_matrix:
   - 11.1:
       postgres_versions: [ 13, 14, 15 ]
   - 12.0:
-      postgres_versions: [ 14, 15 ]
-  - 12.1:
-      postgres_versions: [ 14, 15, 16 ]
-  - 13.0:
-      postgres_versions: [ 15, 16, 17 ]
-  - 13.1:
-      postgres_versions: [ 15, 16, 17 ]
-  - 13.2:
-      postgres_versions: [ 15, 16, 17]
-  - 14.0:
-      postgres_versions: [ 16, 17, 18 ]
+      postgres_versions: [ 14, 15 ]