[Enhancement] Adding Multi-Arch Support for Docker Images in Logstash-output-opensearch

[peterzhuamazon]

Is your feature request related to a problem? Please describe.
[Enhancement] Adding Multi-Arch Support for Docker Images in Logstash-output-opensearch
We want to add the multi-arch support for Docker images in Logstash-output-opensearch,
so that customers does not need to specify the Arch and we dont need to add new tags for separate images.

Describe the solution you'd like
Docker Buildx on the Docker Desktop.
#41

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
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