refactor!: update to latest iroh-metrics version, use non-global metrics collection #319

Job	Run time
Android Build Only (aarch64-linux-android)	1m 9s
cargo deny	30s
Checking docs	1m 4s
Android Build Only (armv7-linux-androideabi)	1m 11s
Checking fmt	29s
check_semver	1m 18s
clippy_check	1m 57s
codespell	3s
Cross Build Only (x86_64-unknown-freebsd)	50s
Cross Test (i686-unknown-linux-gnu)	1m 29s
Minimal Supported Rust Version	1m 13s
CI Test Suite / Tests (ubuntu-latest, stable, all)	1m 41s
CI Test Suite / Tests (ubuntu-latest, stable, none)	1m 10s
CI Test Suite / Tests (ubuntu-latest, stable, default)	1m 27s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	2m 26s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	1m 46s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	2m 46s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	2m 18s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	1m 4s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	1m 35s
	27m 26s

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