chore(deps): update otel/opentelemetry-collector-contrib docker tag to v0.156.0

[renovate]

This PR contains the following updates:

Package	Update	Change
otel/opentelemetry-collector-contrib	minor	0.155.0 → 0.156.0

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Release Notes

open-telemetry/opentelemetry-collector-releases (otel/opentelemetry-collector-contrib)

v0.156.0

Compare Source

🚀 New components 🚀

• otelcol-contrib: Add the OBI receiver to the OpenTelemetry Collector Contrib distribution. (#​1386)

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[github-actions]

OpenCode Dependabot Risk Review

Schema: local-stack.dependabot-risk.v1

Decision: APPROVE
Risk: LOW
Automerge allowed: true
Update type: semver-minor
Ecosystem: docker

Summary

Renovate PR bumps otel/opentelemetry-collector-contrib from 0.155.0 to 0.156.0 (minor). Only observability/otel/docker-compose.yml is changed. The OpenTelemetry Collector is a stateless observability pipeline service not listed as stateful or gateway/proxy. Release notes indicate only the addition of the OBI receiver; no breaking changes or runtime migrations are documented. All approval conditions are met.

Changed runtime artifacts

Image / dependency	From	To	Risk note
otel/opentelemetry-collector-contrib	0.155.0	0.156.0	minor update; release notes show only new component addition (OBI receiver), no breaking changes or config migrations

Runtime impact

Expected rolling service update only; OTEL collector is stateless and will restart with the new image.

Breaking change assessment

No breaking changes found in checked release notes; changelog only describes addition of the OBI receiver component.

Required checks

• ./stackctl.sh sync
• ./stackctl.sh up --dry-run --no-logs

Manual follow-up

None

Sources checked

• Renovate PR metadata
• PR diff
• Release notes (otel/opentelemetry-collector-releases CHANGELOG)

[github-actions]

OpenCode risk gate: low risk detected. Update type: semver-minor. Ecosystem: docker.

[github-actions]

OpenCode Dependabot Risk Review

Schema: local-stack.dependabot-risk.v1

Decision: APPROVE
Risk: LOW
Automerge allowed: true
Update type: semver-minor
Ecosystem: docker

Summary

Renovate PR bumps otel/opentelemetry-collector-contrib from 0.155.0 to 0.156.0 (minor). The source compose file and generated stack are both updated in lockstep. The release notes indicate only an additive new component (OBI receiver). The otel-collector is not a stateful or gateway service. No workflow, secret, or deployment scripts are touched.

Changed runtime artifacts

Image / dependency	From	To	Risk note
otel/opentelemetry-collector-contrib	0.155.0	0.156.0	minor update; release notes show only additive component (OBI receiver); no breaking config or migration risk

Runtime impact

Expected rolling service update only; no volume migration or config schema change required.

Breaking change assessment

No breaking changes found in checked release notes; only new component addition.

Required checks

• ./stackctl.sh sync
• ./stackctl.sh up --dry-run --no-logs

Manual follow-up

None

Sources checked

• Renovate PR metadata
• PR diff
• Release notes (CHANGELOG.md)

[github-actions]

OpenCode risk gate: low risk detected. Update type: semver-minor. Ecosystem: docker.