Update monolog/monolog requirement from ^2.3 to ^2.3 || ^3.0 (#1551)

* Update monolog/monolog requirement from ^2.3 to ^2.3 || ^3.0

Updates the requirements on [monolog/monolog](https://github.com/Seldaek/monolog) to permit the latest version.
- [Release notes](https://github.com/Seldaek/monolog/releases)
- [Changelog](https://github.com/Seldaek/monolog/blob/main/CHANGELOG.md)
- [Commits](https://github.com/Seldaek/monolog/compare/2.3.0...3.9.0)

---
updated-dependencies:
- dependency-name: monolog/monolog
  dependency-version: 3.9.0
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

* update monolog example

* style

* drop monolog 2.3 from example

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Brett McBride <brett@deakin.edu.au>

composer.json

@@ -93,7 +93,7 @@
         "guzzlehttp/psr7": "^2.1",
         "mikey179/vfsstream": "^1.6.11",
         "mockery/mockery": "^1.5.1",
-        "monolog/monolog": "^2.3",
+        "monolog/monolog": "^3.0",
         "nyholm/psr7": "^1.4",
         "open-telemetry/dev-tools": "dev-main",
         "php-http/mock-client": "^1.5",

examples/logs/features/monolog-otel-integration.php

@@ -7,12 +7,12 @@ namespace OpenTelemetry\Example;
 use Monolog\Handler\AbstractProcessingHandler;
 use Monolog\Handler\StreamHandler;
 use Monolog\Logger;
+use Monolog\LogRecord as MonologLogRecord;
 use OpenTelemetry\API\Globals;
-use OpenTelemetry\API\Logs\Bridge;
 use OpenTelemetry\API\Logs\LoggerInterface;
 use OpenTelemetry\API\Logs\LoggerProviderInterface;
 use OpenTelemetry\API\Logs\LogRecord;
-use OpenTelemetry\API\Logs\Map\Psr3;
+use OpenTelemetry\API\Logs\Severity;
 use Psr\Log\LogLevel;
 
 /**
@@ -36,7 +36,7 @@ require __DIR__ . '/../../../vendor/autoload.php';
 $streamHandler = new StreamHandler(STDOUT, LogLevel::DEBUG);
 $tracer = Globals::tracerProvider()->getTracer('monolog-demo');
 
-//otel handler for Monolog v2
+//otel handler for Monolog v3
 $otelHandler = new class(LogLevel::INFO) extends AbstractProcessingHandler {
     private LoggerInterface $logger;
 
@@ -50,19 +50,19 @@ $otelHandler = new class(LogLevel::INFO) extends AbstractProcessingHandler {
         $this->logger = $provider->getLogger('monolog-demo', null, null, ['logging.library' => 'monolog']);
     }
 
-    protected function write(array $record): void
+    protected function write(MonologLogRecord $record): void
     {
         $this->logger->emit($this->convert($record));
     }
 
-    private function convert(array $record): LogRecord
+    private function convert(MonologLogRecord $record): LogRecord
     {
         return (new LogRecord($record['message']))
-            ->setSeverityText($record['level_name'])
+            ->setSeverityText($record->level->toPsrLogLevel())
             ->setTimestamp((int) (microtime(true) * LogRecord::NANOS_PER_SECOND))
-            ->setObservedTimestamp($record['datetime']->format('U') * LogRecord::NANOS_PER_SECOND)
-            ->setSeverityNumber(Psr3::severityNumber($record['level_name']))
-            ->setAttributes($record['context'] + $record['extra']);
+            ->setObservedTimestamp((int) $record->datetime->format('U') * LogRecord::NANOS_PER_SECOND)
+            ->setSeverityNumber(Severity::fromPsr3($record->level->toPsrLogLevel()))
+            ->setAttributes($record->context + $record->extra);
     }
 };