Upgrade AutoValue 1.9 -> 1.10

[Picnic-Bot]

This PR contains the following updates:

Package	Type	Update	Change
com.google.auto.value:auto-value-annotations	compile	minor	1.9 -> 1.10
com.google.auto.value:auto-value	compile	minor	1.9 -> 1.10

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[Picnic-Bot]

Suggested commit message:

Upgrade AutoValue 1.9 -> 1.10 (#283)

See:
- https://github.com/google/auto/releases/tag/auto-value-1.10
- https://github.com/google/auto/compare/auto-value-1.9...auto-value-1.10

[Stephan202]

The Update error-prone.picnic.tech website content / build (pull_request) build was cancelled again. I suspect because of this setting. I filed #284.