Remove obsolete error handler that marked every test as risky

[jbrooksuk]

Problem

Every test (675) is reported as risky in every CI matrix job — e.g. this run. The compact CI output hides the reason, but running a single test locally shows:

RISKY: Test code or tested code removed error handlers other than its own

Cause

workbench/bootstrap/suppress-deprecations.php (added in d1e0e50) registers a global error handler at autoload time via Composer's autoload-dev.files, so it sits beneath PHPUnit's handler in every test's baseline. Laravel's HandleExceptions::flushHandlersState() pops the entire error handler stack when Testbench tears the app down between tests. PHPUnit 12 then sees that a handler from its pre-test baseline is gone and flags the test as risky — for every single test.

Fix

Delete the file and its autoload-dev.files entry. The handler is obsolete:

• It suppressed the PHP 8.5 PDO::MYSQL_ATTR_SSL_CA deprecation triggered by Testbench's bundled database config.
• The only PHP 8.5 leg in CI (Laravel 13, prefer-stable) now resolves Testbench 11, whose config already uses the new Pdo\Mysql::ATTR_SSL_CA constant.
• Older Testbench versions (Laravel 11/12 legs, prefer-lowest) only run on PHP 8.3/8.4, where the constant isn't deprecated.

Verification

Full suite locally after the change:

Tests:    2 todos, 675 passed (2963 assertions)

Zero risky, all passing.

🤖 Generated with Claude Code