Overview of changes

• Update bundled certificates as of 2023-01-10. #791
• Fix typo in deprecation notice. #785 Props @costdev
• Minor internal improvements for passing the correct type to function calls. #779
• Confirmed compatibility with PHP 8.2. No changes were needed, so Request 2.0.1 and higher can be considered compatible with PHP 8.2.
• Various documentation improvements and other general housekeeping.