Update Rust crate tracing-subscriber to v0.3.18

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
tracing-subscriber (source)	dependencies	patch	0.3.17 -> 0.3.18

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Release Notes

tokio-rs/tracing (tracing-subscriber)

v0.3.18: tracing-subscriber 0.3.18

Compare Source

This release of tracing-subscriber adds support for the [NO_COLOR][NO_COLOR] environment variable (an informal standard to disable emitting ANSI color escape codes) in fmt::Layer, reintroduces support for the [chrono][chrono] crate, and increases the minimum supported Rust version (MSRV) to Rust 1.63.0.

It also introduces several minor API improvements.

Added

• chrono: Add [chrono][chrono] implementations of FormatTime (#​2690)
• subscriber: Add support for the [NO_COLOR][NO_COLOR] environment variable in fmt::Layer (#​2647)
• fmt: make format::Writer::new() public (#​2680)
• filter: Implement layer::Filter for Option<Filter> (#​2407)

Changed

• log: bump version of tracing-log to 0.2 (#​2772)
• Increased minimum supported Rust version (MSRV) to 1.63.0+.

Thanks to @​shayne-fletcher, @​dmlary, @​kaifastromai, and @​jsgf for contributing!

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