Update tracing-subscriber requirement from 0.2.5 to 0.3.0

[dependabot[bot]]

Updates the requirements on tracing-subscriber to permit the latest version.

Release notes

Sourced from tracing-subscriber's releases.

tracing-subscriber 0.2.25

0.2.25 (October 5, 2021)

This release fixes an issue where a Layer implementation's custom downcast_raw implementation was lost when wrapping that layer with a per-layer filter.

Fixed

• registry: Forward Filtered::downcast_raw to wrapped Layer (#1619)

Added

• Documentation improvements (#1596, #1601)

Thanks to @​bryanburgers for contributing to this release!

Commits

• 6692aaf subscriber: prepare to release 0.2.25 (#1622)
• 29ffdbc subscriber: forward Filtered::downcast_raw to wrapped Layer (#1619)
• 645f282 attributes: prepare to release 0.1.18 (#1621)
• 7dda7f5 attributes: remove unnecessary quote_spanned! (#1617)
• 243a3e2 attributes: fix compile error with instrumented async functions (#1616)
• ac74ba0 attributes: suppress clippy::suspicious_else without nop let (#1614)
• 66cd79f attributes: prepare to release v0.1.17 (#1611)
• 3ee87f3 core: prepare to release 0.1.21 (#1610)
• 84c1c26 chore: fix CI tracing-core nostd testing tracing
• c9db496 attributes: skip async spans if level disabled (#1607)
• Additional commits viewable in compare view

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[djc]

Covered by #1206.

[dependabot[bot]]

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