v8.4.0

What's Changed

• chore: phpstan errors by @taka-oyama in #247
• feat: add php8.4 support by @taka-oyama in #248
• chore: symfony/deprecation-contracts is no longer used by @taka-oyama in #249
• chore: Connection:: __debugInfo cleanup by @taka-oyama in #250
• chore: add better phpdoc to TimestampBound by @taka-oyama in #251
• chore: remove unused option "useGapicBackoffs" by @taka-oyama in #252
• feat: deprecate Connection::getDoctrineConnection() by @taka-oyama in #254
• chore: update laravel to 11.31 to avoid security vulnerability by @taka-oyama in #253
• feat: use expected type for Connection::__construct() to bypass phpstan errors by @taka-oyama in #255
• Support PHPStan 2.x by @zeriyoshi in #245

Full Changelog: v8.3.1...v8.4.0