Update K8s images in base to v6.9.391

Author: DaedalusG

base/monitoring/otel-collector/otel-collector.Deployment.yaml

@@ -26,7 +26,7 @@ spec:
     spec:
       containers:
         - name: otel-collector
-          image: index.docker.io/sourcegraph/opentelemetry-collector:6.2.1106@sha256:7c748a36a25b165477f5633c2f92378c951d1f2310202b54da8725e97b4b77e4
+          image: us-docker.pkg.dev/sourcegraph-images/internal/opentelemetry-collector:6.9.391@sha256:24648b31fa1e09d4ef5600b93faa793aad3372b15f83d5d2153b3d05cef1e79d
           command:
             - "/bin/otelcol-sourcegraph"
             # To use a custom configuration, edit otel-collector.ConfigMap.yaml