chore: bump tracing-subscriber from 0.3.8 to 0.3.9

[dependabot[bot]]

Bumps tracing-subscriber from 0.3.8 to 0.3.9.

Release notes

Sourced from tracing-subscriber's releases.

tracing-subscriber 0.3.9

This release updates the minimum supported Rust version (MSRV) to 1.49.0, and updates the (optional) dependency on parking_lot to v0.12.

Changed

• Updated minimum supported Rust version (MSRV) to 1.49.0 (#1913)
• parking_lot: updated to v0.12 ([008339d])

Added

• fmt: Documentation improvements (#1926, #1927)

#1913: tokio-rs/tracing#1913 #1926: tokio-rs/tracing#1926 #1927: tokio-rs/tracing#1927 [008339d]: https://github.com/tokio-rs/tracing/commit/008339d1e8750ffe7b4634fc7789bda0c522424f

Commits

• 2974ae9 subscriber: prepare to release v0.3.9 (#1938)
• 008339d subscriber: update parking_lot to 0.12
• 846a53e tracing: prepare to release v0.1.31 (#1937)
• 94379a3 docs: clean up tracing_subscriber::fmt formatter docs (#1927)
• 38a99d8 docs: add tracing-forest to "Related Crates" section (#1935)
• b37d8af tracing: fix wrong log level in warn! macro (#1930)
• e5921ba docs: update Compact formatter docs (#1926)
• f4a44cf opentelemetry: prepare to release v0.17.1 (#1922)
• 21eb741 opentelemetry: allocate fewer strings for recording events (#1917)
• f8a93f1 opentelemetry: forward event source locations (#1911)
• Additional commits viewable in compare view

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