Bumps [ex_doc](https://github.com/elixir-lang/ex_doc) from 0.25.1 to 0.25.2.
- [Release notes](https://github.com/elixir-lang/ex_doc/releases)
- [Changelog](https://github.com/elixir-lang/ex_doc/blob/master/CHANGELOG.md)
- [Commits](elixir-lang/ex_doc@v0.25.1...v0.25.2)

---
updated-dependencies:
- dependency-name: ex_doc
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [ex_doc](https://github.com/elixir-lang/ex_doc) from 0.25.2 to 0.25.3.
- [Release notes](https://github.com/elixir-lang/ex_doc/releases)
- [Changelog](https://github.com/elixir-lang/ex_doc/blob/master/CHANGELOG.md)
- [Commits](elixir-lang/ex_doc@v0.25.2...v0.25.3)

---
updated-dependencies:
- dependency-name: ex_doc
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [excoveralls](https://github.com/parroty/excoveralls) from 0.14.2 to 0.14.3.
- [Release notes](https://github.com/parroty/excoveralls/releases)
- [Changelog](https://github.com/parroty/excoveralls/blob/master/CHANGELOG.md)
- [Commits](parroty/excoveralls@v0.14.2...v0.14.3)

---
updated-dependencies:
- dependency-name: excoveralls
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [ex_doc](https://github.com/elixir-lang/ex_doc) from 0.25.3 to 0.25.5.
- [Release notes](https://github.com/elixir-lang/ex_doc/releases)
- [Changelog](https://github.com/elixir-lang/ex_doc/blob/master/CHANGELOG.md)
- [Commits](elixir-lang/ex_doc@v0.25.3...v0.25.5)

---
updated-dependencies:
- dependency-name: ex_doc
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [excoveralls](https://github.com/parroty/excoveralls) from 0.14.3 to 0.14.4.
- [Release notes](https://github.com/parroty/excoveralls/releases)
- [Changelog](https://github.com/parroty/excoveralls/blob/master/CHANGELOG.md)
- [Commits](parroty/excoveralls@v0.14.3...v0.14.4)

---
updated-dependencies:
- dependency-name: excoveralls
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [exometer_core](https://github.com/Feuerlabs/exometer_core) from 1.6.0 to 1.6.1.
- [Release notes](https://github.com/Feuerlabs/exometer_core/releases)
- [Changelog](https://github.com/Feuerlabs/exometer_core/blob/master/CHANGELOG.md)
- [Commits](Feuerlabs/exometer_core@1.6.0...1.6.1)

---
updated-dependencies:
- dependency-name: exometer_core
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

….6.1

Bumps [ex_doc](https://github.com/elixir-lang/ex_doc) from 0.25.5 to 0.26.0.
- [Release notes](https://github.com/elixir-lang/ex_doc/releases)
- [Changelog](https://github.com/elixir-lang/ex_doc/blob/main/CHANGELOG.md)
- [Commits](elixir-lang/ex_doc@v0.25.5...v0.26.0)

---
updated-dependencies:
- dependency-name: ex_doc
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

ex_doc 0.26.0 changes this value's default to "main".

This was previously used to manage log output from Erlang :error_logger.
It may have also been a dependency of exometer_core at some point in the
past, but I couldn't find a reference to it after some brief searching.

Either way, :logger itself does the same job without the additional
dependency.

Bumps [ex_doc](https://github.com/elixir-lang/ex_doc) from 0.26.0 to 0.27.0.
- [Release notes](https://github.com/elixir-lang/ex_doc/releases)
- [Changelog](https://github.com/elixir-lang/ex_doc/blob/main/CHANGELOG.md)
- [Commits](https://github.com/elixir-lang/ex_doc/commits)

---
updated-dependencies:
- dependency-name: ex_doc
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [ex_doc](https://github.com/elixir-lang/ex_doc) from 0.27.0 to 0.27.3.
- [Release notes](https://github.com/elixir-lang/ex_doc/releases)
- [Changelog](https://github.com/elixir-lang/ex_doc/blob/v0.27.3/CHANGELOG.md)
- [Commits](elixir-lang/ex_doc@v0.27.0...v0.27.3)

---
updated-dependencies:
- dependency-name: ex_doc
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [ex_doc](https://github.com/elixir-lang/ex_doc) from 0.27.3 to 0.28.0.
- [Release notes](https://github.com/elixir-lang/ex_doc/releases)
- [Changelog](https://github.com/elixir-lang/ex_doc/blob/main/CHANGELOG.md)
- [Commits](elixir-lang/ex_doc@v0.27.3...v0.28.0)

---
updated-dependencies:
- dependency-name: ex_doc
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [ex_doc](https://github.com/elixir-lang/ex_doc) from 0.28.0 to 0.28.1.
- [Release notes](https://github.com/elixir-lang/ex_doc/releases)
- [Changelog](https://github.com/elixir-lang/ex_doc/blob/main/CHANGELOG.md)
- [Commits](elixir-lang/ex_doc@v0.28.0...v0.28.1)

---
updated-dependencies:
- dependency-name: ex_doc
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [ex_doc](https://github.com/elixir-lang/ex_doc) from 0.28.1 to 0.28.2.
- [Release notes](https://github.com/elixir-lang/ex_doc/releases)
- [Changelog](https://github.com/elixir-lang/ex_doc/blob/main/CHANGELOG.md)
- [Commits](elixir-lang/ex_doc@v0.28.1...v0.28.2)

---
updated-dependencies:
- dependency-name: ex_doc
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

We're only interested in automatic dependency updates for minor (not
patch) versions.

Also, clean up an old credo reference.