add support for seiscomp3-schema/0.6, 0.12

[bpeng]

Proposed Changes

Refer https://github.com/GeoNet/tickets/issues/15259

Changes proposed in this pull request:

• update for seiscomp3-schema/0.6, 0.12
• As there is currently no seiscompml 0.12 file, a seiscompml 0.13 file is used (with changing the version number, and validated ) for testing

Production Changes

The following production changes are required to deploy these changes:

• None

Review

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Code Review Guide

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[junghao]

Looks good