OTEL 1.25 compatibility (#840)

Author: alexmojaki

logfire/_internal/metrics.py

@@ -51,7 +51,7 @@ def get_meter(
                 provider = NoOpMeterProvider()
             else:
                 provider = self.provider
-            inner_meter = provider.get_meter(name, version, schema_url, attributes)
+            inner_meter = provider.get_meter(name, version, schema_url, *[attributes] if attributes is not None else [])
             meter = _ProxyMeter(inner_meter, name, version, schema_url)
             self.meters.add(meter)
             return meter

pyproject.toml

@@ -46,8 +46,8 @@ classifiers = [
     "Framework :: OpenTelemetry :: Instrumentations",
 ]
 dependencies = [
-    "opentelemetry-sdk >= 1.26.0, < 1.31.0",
-    "opentelemetry-exporter-otlp-proto-http >= 1.26.0, < 1.31.0",
+    "opentelemetry-sdk >= 1.21.0, < 1.31.0",
+    "opentelemetry-exporter-otlp-proto-http >= 1.21.0, < 1.31.0",
     "opentelemetry-instrumentation >= 0.41b0",
     "rich >= 13.4.2",
     "protobuf >= 4.23.4",