Drop support for PostgreSQL 12 (#34744)

README.md

@@ -57,7 +57,7 @@ Mastodon is a **free, open-source social network server** based on ActivityPub w
 
 ### Requirements
 
-- **PostgreSQL** 12+
+- **PostgreSQL** 13+
 - **Redis** 6.2+
 - **Ruby** 3.2+
 - **Node.js** 20+

config/initializers/strong_migrations.rb

@@ -1,4 +1,4 @@
 # frozen_string_literal: true
 
 StrongMigrations.start_after = 2017_09_24_022025
-StrongMigrations.target_version = 12
+StrongMigrations.target_version = 13

lib/tasks/db.rake

@@ -63,7 +63,7 @@ namespace :db do
 
   task pre_migration_check: :environment do
     pg_version = ActiveRecord::Base.connection.database_version
-    abort 'This version of Mastodon requires PostgreSQL 12.0 or newer. Please update PostgreSQL before updating Mastodon.' if pg_version < 120_000
+    abort 'This version of Mastodon requires PostgreSQL 13.0 or newer. Please update PostgreSQL before updating Mastodon.' if pg_version < 130_000
 
     schema_version = ActiveRecord::Migrator.current_version
     abort <<~MESSAGE if ENV['SKIP_POST_DEPLOYMENT_MIGRATIONS'] && schema_version < 2023_09_07_150100