Upgrade notes for SimpleSAMLphp 2.5

SimpleSAMLphp 2.5 is a minor new release which introduces a few new features. The following changes are relevant for installers and/or developers.

Software requirements

• The minimum PHP version required is now PHP 8.3.
• Symfony was upgraded to 7.4 (LTS).

General Upgrade Advice

When updating SimpleSAMLphp you might like to run the following to remove any cached objects that might have older code signatures to the new SimpleSAMLphp version. If you encounter a permissions error running the clear-symfony-cache shown below please see the the SimpleSAMLphp installation instructions for information about how to update the filesystem permissions.

composer clear-symfony-cache

The above command is particularly useful if you see a message after your update about "has required constructor arguments and does not exist in the container" or "Did you forget to define the controller as a service?" as these error messages might indicate a stale cache.