Bump env_logger from 0.8.3 to 0.8.4

Created by: dependabot[bot]

Bumps env_logger from 0.8.3 to 0.8.4.

Release notes

Sourced from env_logger's releases.

0.8.4

Improvements:

• Allow writing logs to a custom output target (via Target::Pipe)

Bug fixes:

• Actually allow overriding filter levels using env_logger::Builders methods, as documented

Commits

• 13cafce Bump version to 0.8.4
• 0900811 Ensure unique directive names when building filters
• 1a8379a Allow writing logs to a custom output target (Target::Pipe)
• 2151771 Upgrade to GitHub-native Dependabot
• 16d982e Fix lints
• See full diff in compare view

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