Release v1.46.0/v0.140.0

[github-actions]

Like #4522, but for v1.46.0/v0.140.0
Performed by collector release manager

• Prepare core release v1.46.0/v0.140.0
• Tag and release core v1.46.0/v0.140.0
• Prepare contrib release v0.140.0
• Tag and release contrib v0.140.0
• Prepare otelcol-releases v0.140.0
• Release binaries and container images v0.140.0

Performed by operator maintainers

• Release the operator v0.140.0

Performed by helm chart maintainers

• Update the opentelemetry-collector helm chart to use v0.140.0

[mx-psi]

cc @andrzej-stencel @dehaansa

[andrzej-stencel]

Slack thread: https://cloud-native.slack.com/archives/C07CCCMRXBK/p1763369374071039

[dehaansa]

Releases complete, I can't update the checklist above.