Update to sb-breadcrumbs-block v0.6.1 for support for PHP 8.1 and PHP 8.2.

Changes
| Change | Reference |
|---|---|
| Changed: Support PHP 8.1 and PHP 8.2 | bobbingwide/sb-breadcrumbs-block#8 |
Tested
- Tested: With WordPress 6.4.1 and WordPress Multisite
- Tested: With Gutenberg 17.1.4
- Tested: With PHP 8.1 and PHP 8.2
- Tested: With Yoast-SEO 21.6
