deps: update otel/opentelemetry-collector docker tag to v0.87.0 (keptn#2276)

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

Author: renovate[bot]

examples/support/observability/config/otel-collector.yaml

@@ -103,7 +103,7 @@ spec:
           env:
             - name: GOGC
               value: "80"
-          image: otel/opentelemetry-collector:0.86.0
+          image: otel/opentelemetry-collector:0.87.0
           name: otel-collector
           resources:
             limits: