build(deps): Bump elastic-apm to 4.9.0

[elastic-observability-automation]

Bump elastic-apm to latest version

Set org.opencontainers.image.version in Dockerfile

1 file(s) updated with "org.opencontainers.image.version=\"4.9.0\"": * Dockerfile

Bump elastic-apm

ran shell command "bundle update elastic-apm"

Set org.label-schema.version in Dockerfile

1 file(s) updated with "org.label-schema.version=\"4.9.0\"": * Dockerfile

Install new elastic-apm pip dependency version

1 file(s) updated with "gem 'elastic-apm', '4.9.0'": * Gemfile

GitHub Action workflow link

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