Update to slog v1.5.1 for support for PHP 8.1 and PHP 8.2.

Changes
slog v1.5.1 contains previously unreleased changes for v1.4.0 and v1.5.0
Changes in v1.5.1
| Change | Reference |
|---|---|
| Changed: Support PHP 8.1 and PHP 8.2 | bobbingwide/slog#31 |
Changes in v1.5.0
| Change | Reference |
|---|---|
| Changed: Add URL filtering logic | bobbingwide/slog#27 |
| Changed: Remove out of date comment | |
| Changed: Driver tab: Add Daily Trace Summary box to set the trace summary file | bobbingwide/slog#25 |
Changes in v1.4.0
| Change | Reference |
|---|---|
| Added: Search tab | bobbingwide/slog#23 |
| enable display of GET-404 requests… which could be favicon.ico 302’s | bobbingwide/slog#21 |
Tested
- Tested: With WordPress 6.4.1 and WordPress Multisite
- Tested: With PHP 8.0, PHP 8.1 and PHP 8.2
- Tested: With PHPUnit 9.6
