refactor!: update to latest iroh-metrics version, use non-global metrics collection #294

Job	Run time
Cross Build Only (x86_64-unknown-freebsd)	52s
check_semver	1m 4s
Android Build Only (aarch64-linux-android)	1m 10s
Android Build Only (armv7-linux-androideabi)	1m 10s
cargo deny	29s
Checking docs	1m 15s
Checking fmt	33s
clippy_check	1m 39s
Cross Test (i686-unknown-linux-gnu)	1m 29s
codespell	4s
Minimal Supported Rust Version	1m 14s
CI Test Suite / Tests (ubuntu-latest, stable, all)	1m 40s
CI Test Suite / Tests (ubuntu-latest, stable, none)	1m 19s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	2m 12s
CI Test Suite / Tests (ubuntu-latest, stable, default)	1m 26s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	1m 33s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	1m 36s
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 26s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	2m 0s
	26m 29s

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