Update dependency nimble_publisher to v2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
nimble_publisher (source)	prod	major	== 1.1.1 → == 2.0.0

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Release Notes

dashbitco/nimble_publisher (nimble_publisher)

v2.0.0

Compare Source

• Use MDExNative as the Markdown engine instead of the deprecated Earmark. While Markdown engines are mostly compatible, they may have subtle differences. If you were specifying custom :earmark_options on use NimblePublisher, you will need to use :comrak_options instead. See the documentation for more information
  • Require Elixir v1.11+

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

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The artifact failure details are included below:

File name: mix.lock

Command failed: install-tool elixir v1.20.1