chore: update references to use MySQL 8.0

Author: paulbalandan

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -101,7 +101,7 @@ body:
     id: database
     attributes:
       label: Database
-      description: e.g. MySQL 5.6, MariaDB 10.2, PostgreSQL 9.6
+      description: e.g. MySQL 8.0, MariaDB 10.2, PostgreSQL 9.6
     validations:
       required: false
 

.github/workflows/reusable-phpunit-test.yml

@@ -19,10 +19,6 @@ on:
         description: The database platform to be tested
         type: string
         required: false
-      mysql-version:
-        description: Version of the mysql Docker image
-        type: string
-        required: false
       group-name:
         description: The @group to test
         type: string
@@ -70,7 +66,7 @@ jobs:
     # Service containers cannot be extracted to caller workflows yet
     services:
       mysql:
-        image: mysql:${{ inputs.mysql-version || '8.0' }}
+        image: mysql:8.0
         env:
           MYSQL_ALLOW_EMPTY_PASSWORD: yes
           MYSQL_DATABASE: test
@@ -176,7 +172,7 @@ jobs:
         id: setup-env
         run: |
           echo "COMPOSER_CACHE_FILES_DIR=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
-          echo "ARTIFACT_NAME=${{ inputs.job-id || github.job }}-php-${{ inputs.php-version }}-db-${{ inputs.db-platform || 'none' }}${{ inputs.mysql-version || '' }}" >> $GITHUB_OUTPUT
+          echo "ARTIFACT_NAME=${{ inputs.job-id || github.job }}-php-${{ inputs.php-version }}-db-${{ inputs.db-platform || 'none' }}" >> $GITHUB_OUTPUT
 
       - name: Cache dependencies
         uses: actions/cache@v5

.github/workflows/test-phpunit.yml

@@ -92,20 +92,13 @@ jobs:
           - Postgre
           - SQLSRV
           - SQLite3
-        mysql-version:
-          - '8.0'
-        include:
-          - php-version: '8.2'
-            db-platform: MySQLi
-            mysql-version: '5.7'
 
     uses: ./.github/workflows/reusable-phpunit-test.yml # @TODO Extract to codeigniter4/.github repo
     with:
       job-name: ''
       php-version: ${{ matrix.php-version }}
       job-id: database-live-tests
       db-platform: ${{ matrix.db-platform }}
-      mysql-version: ${{ matrix.mysql-version }}
       group-name: DatabaseLive
       enable-artifact-upload: ${{ matrix.php-version == needs.coverage-php-version.outputs.version }}
       enable-coverage: ${{ matrix.php-version == needs.coverage-php-version.outputs.version }}

user_guide_src/source/intro/requirements.rst

@@ -63,7 +63,7 @@ Supported Databases
 A database is required for most web application programming.
 Currently supported databases are:
 
-  - MySQL via the ``MySQLi`` driver (version 5.1 and above only)
+  - MySQL via the ``MySQLi`` driver (version 8.0 and above only)
   - PostgreSQL via the ``Postgre`` driver (version 7.4 and above only)
   - SQLite3 via the ``SQLite3`` driver
   - Microsoft SQL Server via the ``SQLSRV`` driver (version 2012 and above only)
@@ -72,7 +72,7 @@ Currently supported databases are:
 Not all of the drivers have been converted/rewritten for CodeIgniter4.
 The list below shows the outstanding ones.
 
-  - MySQL (5.1+) via the *pdo* driver
+  - MySQL via the *pdo* driver
   - Oracle via the *pdo* drivers
   - PostgreSQL via the *pdo* driver
   - MSSQL via the *pdo* driver