Release version 3.10.0 - Githubissues

Release Changelog

Fix: Improve PHP 8.1 compatibility by updating filter_*() calls referencing FILTER_SANITIZE_STRING (issue #1422).
Fix: prevent PHP deprecation warning when checking for the Stream settings page requests (issue #1440).
Fix: Add the associated post title to comment events (issue #1430).
Fix: Use the user associated with a comment instead of the current logged-in user when logging comments (issue #1429).
Fix: Prevent PHP warnings when no Lead ID present for a Gravity Forms submission (issue #1447).
Fix: Remove support for legacy WordPress VIP user attribute helpers get_user_attributes(), delete_user_attributes() and update_user_attributes() (issue #1425).
Development: Document the process for reporting security vulnerabilities (issue #1433).
Development: Mark as tested with WordPress version 6.3.

[x] This pull request is to the master branch.
[x] Release version follows semantic versioning. Does it include breaking changes?
[x] Update changelog in readme.txt.
[x] Bump version in stream.php.
[x] Bump Stable tag in readme.txt.
[x] Bump version in classes/class-plugin.php.
[ ] Draft a release on GitHub.

Change [ ] to [x] to mark the items as done.