fix: require sem-conv >= 1.38 to avoid missing class fatal errors

Author: ste93cry

src/SDK/composer.json

@@ -22,7 +22,7 @@
         "nyholm/psr7-server": "^1.1",
         "open-telemetry/api": "^1.8",
         "open-telemetry/context": "^1.4",
-        "open-telemetry/sem-conv": "^1.0",
+        "open-telemetry/sem-conv": "^1.38",
         "php-http/discovery": "^1.14",
         "psr/http-client-implementation": "^1.0",
         "psr/http-factory-implementation": "^1.0",