PHP 8.2 Support in CMS5 for non-core modules

[emteknetnz]

Blocked on completion of:

• https://github.com/silverstripe/silverstripe-framework/issues/10403
• https://github.com/silverstripe/silverstripe-graphql/issues/511

Non-core modules version of PHP8.2 Support in CMS5 for core modules

Acceptance criteria

• [ ] Version 1.6.0 of gha-generate-matrix has been tagged so that PHP 8.2 builds run in CI for CMS 5
• [ ] Supported modules (kitchen-sink + others e.g. staticpublishqueue) have their CI builds pass on PHP 8.2
• [ ] Syntax/constructs deprecated in PHP8.2 are no longer used

Integration test run with all pull-requests running PHP 8.2

• https://github.com/emteknetnz/recipe-kitchen-sink/actions/runs/3963799564

PRs

• https://github.com/silverstripe/gha-generate-matrix/pull/39
• https://github.com/silverstripe/cwp-core/pull/117
• https://github.com/silverstripe/silverstripe-documentconverter/pull/36
• https://github.com/silverstripe/silverstripe-iframe/pull/64
• https://github.com/silverstripe/silverstripe-ldap/pull/48
• https://github.com/silverstripe/solr-php-client/pull/4
• https://github.com/silverstripe/silverstripe-userforms/pull/1187
• https://github.com/symbiote/silverstripe-queuedjobs/pull/395
• https://github.com/silverstripe/silverstripe-fulltextsearch/pull/337
• https://github.com/silverstripe/silverstripe-framework/pull/10658
• https://github.com/silverstripe/developer-docs/pull/143

[GuySartorelli]

All PRs are merged