[Automation] Bump product version numbers

[elastic-observability-automation]

Bump release versions in the config/versions.yml

Update config/versions.yml curator 9.0.0

change detected: * key "$.versioning_systems.curator.current" updated from "8.0.21" to "9.0.0", in file "config/versions.yml"

v9.0.0

**BREAKING CHANGE**

Curator 9.x requires Python 3.10 or later. Python 3.8 and 3.9 are no longer supported. It has not yet been tested with Python 3.14.

**Announcement**

This the first major release supporting Elasticsearch 9.x. Only Elasticsearch 9 is supported by this release. If you need to use Curator with Elasticsearch 8.x, please use Curator 8.0.21 or earlier.

All tests pass in Python versions 3.10.13, 3.11.8, 3.12.9, and 3.13.7.

The Docker image is now based on ``python:3.13.7-alpine3.22``. The release candidate was built and tested against an Elastic Cloud instance.

Update config/versions.yml edot-collector 9.1.5

change detected: * key "$.versioning_systems.edot-collector.current" updated from "9.1.4" to "9.1.5", in file "config/versions.yml"

v9.1.5

Downloads: https://elastic.co/downloads/elastic-agent
Release notes: https://www.elastic.co/docs/release-notes/fleet#fleet-elastic-agent-9.1.5-release-notes

Update config/versions.yml edot-java 1.6.0

change detected: * key "$.versioning_systems.edot-java.current" updated from "1.5.0" to "1.6.0", in file "config/versions.yml"

v1.6.0

This release is based on the following upstream versions:

* opentelemetry-javaagent: [2.20.1](https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases/tag/v2.20.1)
* opentelemetry-sdk: [1.54.1](https://github.com/open-telemetry/opentelemetry-java/releases/tag/v1.54.1)
* opentelemetry-semconv: [1.37.0](https://github.com/open-telemetry/semantic-conventions-java/releases/tag/v1.37.0)
* opentelemetry-java-contrib: [1.49.0](https://github.com/open-telemetry/opentelemetry-java-contrib/releases/tag/v1.49.0)

## Features and enhancements

* Add support for dynamic configuration options for 9.2 #818
* Switch upstream Opamp client #789

## Breaking Changes

* Switch to upstream instrumentation of openai by default #763

GitHub Action workflow link

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[theletterf]

Reverted the Curator version for now, as per @shainaraskas advice.