Bump slimmer from 18.5.0 to 18.5.2

[dependabot[bot]]

Bumps slimmer from 18.5.0 to 18.5.2.

Changelog

Sourced from slimmer's changelog.

18.5.2

• Fix a mistake in 18.5.1

18.5.1

• Include a part of the body in the error message text

Commits

• f7839c8 Merge pull request #333 from alphagov/release-18.5.2
• e9a0786 Release 18.5.2
• 03c7332 Merge pull request #332 from alphagov/fix-mistake-in-PR-330
• 4869c72 Update CHANGELOG.md
• d072645 Fix mistake in PR #330
• 1b82472 Merge pull request #331 from alphagov/release-18.5.1
• 3840797 Release 18.5.1
• 4fef853 Merge pull request #330 from alphagov/2495-sentry-errors-investigate-fix-fron...
• d608731 Include a part of the body in the error message
• See full diff in compare view

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