feat: changelogs

docs/changelogs/1.12.3.md

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+# Blitzkrieg 1.12.3
+
+3-day downtime fixed!
+
+## Changes
+
+- Split `/ratings` into `/ratings current` and `/ratings archive`
+  - `current` now properly handles when there is no ongoing ratings season
+  - `archive` displays older archived seasons
+
+## Fixes
+
+- The bot is now no ratings seasons tolerant