Revert these changes because install-testing.yml needs to remain compatible with older branches.

Author: johnbillion

.github/workflows/install-testing.yml

@@ -85,10 +85,20 @@ jobs:
           - db-version: '5.0'
           - db-version: '5.1'
           - db-version: '5.5'
+          # The PHP <= 7.3/MySQL 8.4 jobs currently fail due to mysql_native_password being disabled by default. See https://core.trac.wordpress.org/ticket/61218.
+          - php: '7.2'
+            db-version: '8.4'
+          - php: '7.3'
+            db-version: '8.4'
           # Only test the latest innovation release.
           - db-version: '9.0'
           - db-version: '9.1'
           - db-version: '9.2'
+          # MySQL 9.0+ will not work on PHP 7.2 & 7.3. See https://core.trac.wordpress.org/ticket/61218.
+          - php: '7.2'
+            db-version: '9.3'
+          - php: '7.3'
+            db-version: '9.3'
 
     services:
       database:
@@ -103,7 +113,7 @@ jobs:
           -e MYSQL_ROOT_PASSWORD="root"
           -e MYSQL_DATABASE="test_db"
           --entrypoint sh ${{ matrix.db-type }}:${{ matrix.db-version }}
-          -c "exec docker-entrypoint.sh mysqld"
+          -c "exec docker-entrypoint.sh mysqld${{ matrix.db-type == 'mysql' && contains( fromJSON('["7.2", "7.3"]'), matrix.php ) && ' --default-authentication-plugin=mysql_native_password' || '' }}"
 
     steps:
       - name: Set up PHP ${{ matrix.php }}