set kibana version to ^7.13.0 for aws package

[kaiyan-sheng]

What does this PR do?

This PR is to set Kibana version to ^7.13.0 for aws package.

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.

[elasticmachine]

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• Build Cause: Started by user kaiyan-sheng

• Start Time: 2021-05-18T20:09:23.758+0000

• Duration: 3 min 7 sec

• Commit: 103c034

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