maintenance: update table post v26.0 release

Add 26.0 release date.
Add EOL date for 24.x.
Remove EOL v23.x.

Author: fanquake

_includes/posts/maintenance-table.md

@@ -1,4 +1,4 @@
-| 23.0 | 2022-04-25 | 2023-05-18  | 2023-12-01 |
-| 24.0 | 2022-11-24 | after v26.0 | TBA        |
+| 24.0 | 2022-11-24 | 2023-12-12  | 2024-04-02 |
 | 25.0 | 2023-05-18 | after v27.0 | TBA        |
-| 26.0 | TBA*       | TBA         | TBA        |
+| 26.0 | 2023-12-06 | after v28.0 | TBA        |
+| 27.0 | TBA*       | TBA         | TBA        |