🤖 I have created a release *beep* *boop*
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### Updating meta-information for bleeding-edge SNAPSHOT release.

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This PR was generated with [Release Please](https://togithub.com/googleapis/release-please). See [documentation](https://togithub.com/googleapis/release-please#release-please).

* chore: remove double client lib token header

Removes the double inclusion of the standard client lib token when no
custom client lib token has been set. Also reuses more of the standard
feature for setting the client lib token, instaed of appending the
standard token at the moment that we are creating the gRPC stub. This
should reduce the probability that anyone who might be using a custom
header or custom client in some way will get it wrong.

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* test: modify expected outcome to match the new behavior

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Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

- Add the ability to create / update an instance with autoscaling config
  - Note that now user can only specify one of the node_count, processing_units or autoscaling_config as the compute capacity for an instance.
- Add the ability to see autoscaling config with an instance

🤖 I have created a release *beep* *boop*
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## [6.52.0](https://togithub.com/googleapis/java-spanner/compare/v6.51.0...v6.52.0) (2023-10-19)


### Features

* Add support for Managed Autoscaler ([#2624](https://togithub.com/googleapis/java-spanner/issues/2624)) ([e5e6923](https://togithub.com/googleapis/java-spanner/commit/e5e6923a351670ab237c411bb4a549533dac1b6b))

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This PR was generated with [Release Please](https://togithub.com/googleapis/release-please). See [documentation](https://togithub.com/googleapis/release-please#release-please).