Update otel/opentelemetry-collector Docker tag to v0.129.1

Author: renovate[bot]

functional/otlp/Dockerfile

@@ -1,7 +1,7 @@
 # Copyright The OpenTelemetry Authors
 # SPDX-License-Identifier: Apache-2.0
 
-FROM otel/opentelemetry-collector:0.128.0@sha256:580cc87f5ea6c9e3969c37f3c5394b7a8385abb8189df0ddc63b9575a00f52fc
+FROM otel/opentelemetry-collector:0.129.1@sha256:9b0322c9a14fc22dde99fac9c0da97d742f4b16f725ce2a0763590c46884cdc9
 COPY . .
 CMD ["--config", "/otel-cpp/otel-config.yaml"]
 EXPOSE 4317