Bump @opentelemetry/exporter-metrics-otlp-proto in /nodejs

Bumps [@opentelemetry/exporter-metrics-otlp-proto](https://github.com/open-telemetry/opentelemetry-js) from 0.45.1 to 0.46.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-js/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-js/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-js@experimental/v0.45.1...experimental/v0.46.0)

---
updated-dependencies:
- dependency-name: "@opentelemetry/exporter-metrics-otlp-proto"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

nodejs/packages/layer/package.json

@@ -28,7 +28,7 @@
   "dependencies": {
     "@opentelemetry/api": "^1.7.0",
     "@opentelemetry/exporter-trace-otlp-proto": "^0.45.1",
-    "@opentelemetry/exporter-metrics-otlp-proto": "^0.45.1",
+    "@opentelemetry/exporter-metrics-otlp-proto": "^0.46.0",
     "@opentelemetry/instrumentation": "^0.45.1",
     "@opentelemetry/instrumentation-aws-lambda": "^0.37.3",
     "@opentelemetry/instrumentation-aws-sdk": "^0.37.1",