Add active_snapshot to Active Record Versioning section

[westonganger]

Thanks for contributing to the Ruby Toolbox catalog! <3

Before submitting your pull request:

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  by its gem name instead, e.g. rails.)
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• Make sure the CI build passes, we validate your proposed changes in the test suite :)

Github URL: https://github.com/westonganger/active_snapshot

[colszowka]

Thanks here as well @westonganger 👍