chore(deps-dev): bump @elastic/mockopampserver from 0.3.0 to 0.4.0 in /packages/opentelemetry-node (#897)

Author: dependabot[bot]

packages/opentelemetry-node/package-lock.json

@@ -141,7 +141,7 @@
     "@aws-sdk/client-sns": "^3.658.1",
     "@aws-sdk/client-sqs": "^3.658.1",
     "@elastic/elasticsearch": "^9.0.0",
-    "@elastic/mockopampserver": "^0.3.0",
+    "@elastic/mockopampserver": "^0.4.0",
     "@elastic/mockotlpserver": ">=0.8.0 <1",
     "@grpc/grpc-js": "^1.11.1",
     "@grpc/proto-loader": "^0.7.13",