Clearify serialization error message (#161)

Clearify serialization error message

master is the 4.7-dev branch

Mark the 3.x versions as EOL

Merge pull request #160 from marc-mabe/php-8.2-3-4

Test Psaml

Test Psaml

Bump actions/checkout from @2 to @4

Bump actions/cache from @3 to @4

benchmark PHP version

benchmark PHP version

xdebug.mode=coverage

fixed "Calling ReflectionProperty::setValue() with a single argument …

Code coverage on 8.3

Disable code coverage

PHP version is a string

fixup

fixup

fixup

Disable psalm

Disable psalm on PHP 8.4

PHPStan "Access to private static property $instances"

PHPStan "Access to private static property $instances"

PHPStan "Access to private static property $instances"

fix implicitly nullable via default value null

fixup

fixup

use xdebug instead of pcov