build(deps): bump com.google.guava:guava from 1.55.0 to 23.0 in /backend

[dependabot[bot]]

Bumps com.google.guava:guava from 1.55.0 to 23.0.

Release notes

Sourced from com.google.guava:guava's releases.

23.0

Final Guava 23.0 release.

23.0-rc1

First Guava 23.0 release candidate.

22.0

Final Guava 22.0 release.

22.0-rc1

First release candidate for Guava 22.0.

21.0

Final Guava 21.0 release.

This release requires Java 8.

21.0-rc2

Second release candidate for Guava 21.0.

This release candidate fixes a small issue with rc1; a number of methods that create Collectors took Guava's functional types (e.g. base.Function) as parameters rather than the java.util.function equivalent.

This release requires Java 8.

21.0-rc1

First release candidate for Guava 21.0.

This release requires Java 8.

20.0

Final Guava 20.0 release.

20.0-rc1

First release candidate for Guava 20.0.

Commits

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