chore(deps): update otel/opentelemetry-collector-contrib docker digest to 867d107 (#1067)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

demo-app/compose.yaml

@@ -1,6 +1,6 @@
 services:
   collector:
-    image: "otel/opentelemetry-collector-contrib@sha256:4798e3095561ac8ae13a81965088d68b943b1991bbeede91b1564e12c95372cc"
+    image: "otel/opentelemetry-collector-contrib@sha256:867d1074c2f750936fb9358ec9eefa009308053cf156b2c7ca1761ba5ef78452"
     volumes:
       - ./collector.yaml:/etc/demo-collector.yaml
     entrypoint: ["/otelcol-contrib"]