chore: bump MySQL to min 8.4 and support 9.7

- Version 8.0 is out-of-support.
- Version 8.4 is now the oldest LTS.
- New LTS is 9.7

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

Author: susnux

.github/workflows/phpunit-mysql-sharding.yml

@@ -57,9 +57,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - mysql-versions: '8.0'
-            php-versions: '8.3'
           - mysql-versions: '8.4'
+            php-versions: '8.3'
+          - mysql-versions: '9.7'
             php-versions: '8.5'
 
     name: Sharding - MySQL ${{ matrix.mysql-versions }} (PHP ${{ matrix.php-versions }}) - database tests

.github/workflows/phpunit-mysql.yml

@@ -60,9 +60,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - mysql-versions: '8.0'
-            php-versions: '8.3'
           - mysql-versions: '8.4'
+            php-versions: '8.3'
+          - mysql-versions: '9.7'
             php-versions: '8.5'
 
     name: MySQL ${{ matrix.mysql-versions }} (PHP ${{ matrix.php-versions }}) - database tests

apps/settings/lib/SetupChecks/SupportedDatabase.php

@@ -19,8 +19,8 @@ class SupportedDatabase implements ISetupCheck {
 
 	private const MIN_MARIADB = '10.6';
 	private const MAX_MARIADB = '11.8';
-	private const MIN_MYSQL = '8.0';
-	private const MAX_MYSQL = '8.4';
+	private const MIN_MYSQL = '8.4';
+	private const MAX_MYSQL = '9.7';
 	private const MIN_POSTGRES = '14';
 	private const MAX_POSTGRES = '18';
 	private const MIN_ORACLE = '12.2';