Update dependency excoveralls to v0.18.5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
excoveralls (source)	dev	patch	0.18.2 → 0.18.5

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Release Notes

parroty/excoveralls (excoveralls)

v0.18.5

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Changes

• Fix Json output name when export isn't set (#​337)

v0.18.4

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Enhancements

• Add Custom Filename support for coveralls.json (#​335)

Changes

• Elixir 1.18 compatibility (#​333)

v0.18.3

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Changes

• Avoid warning messages for Cobertura
  • Update Range to use function syntax (#​332)

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⚠️ Artifact update problem

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

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

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The artifact failure details are included below:

File name: mix.lock

Command failed: install-tool elixir v1.20.4