fixup! fix: undo unintenional changes

examples/otlp-exporter-node/metrics.js

@@ -15,9 +15,6 @@ const { Resource } = require('@opentelemetry/resources');
 const {
   SEMRESATTRS_SERVICE_NAME,
 } = require('@opentelemetry/semantic-conventions');
-const {
-  ChannelCredentials
-} = require('@grpc/grpc-js');
 
 // Optional and only needed to see the internal diagnostic logging (during development)
 diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.DEBUG);

experimental/CHANGELOG.md

@@ -23,6 +23,12 @@ All notable changes to experimental packages in this project will be documented
   * (user-facing) `url` was intended for internal use and has been removed from all exporters
   * (user-facing) `timeoutMillis` was intended for internal use and has been removed from all exporters
   * (user-facing) `onInit` was intended for internal use and has been removed from all exporters
+* fix(exporter-*-otlp-*): fixes a bug where signal-specific environment variables would not be applied and the trace-specific one was used instead [#4971](https://github.com/open-telemetry/opentelemetry-js/pull/4971) @pichlermarc
+  * Fixes:
+    * `OTEL_EXPORTER_OTLP_METRICS_COMPRESSION`
+    * `OTEL_EXPORTER_OTLP_LOGS_COMPRESSION`
+    * `OTEL_EXPORTER_OTLP_METRICS_CLIENT_CERTIFICATE`
+    * `OTEL_EXPORTER_OTLP_METRICS_CLIENT_KEY`
 
 ### :books: (Refine Doc)