Add ECCN notice #189

Job	Run time
Rustfmt	2m 41s
Builds (ubuntu-22.04, aarch64-linux-android)	1m 44s
Bench (current, refs/pull/187/merge)	6m 6s
Test Suite (stable)	6m 37s
Builds (ubuntu-22.04, x86_64-unknown-linux-musl)	1m 44s
Bench (base, main)	4m 0s
Builds (ubuntu-22.04, wasm32-unknown-unknown, --features wasm --no-default-features)	3m 48s
Test Suite (beta)	6m 40s
Builds (macos-13, aarch64-apple-ios)	4m 24s
Test Suite (1.70.0)	7m 16s
Builds (macos-13, x86_64-apple-darwin)	2m 31s
Builds (macos-14, aarch64-apple-darwin)	3m 28s
Builds (windows-2019, x86_64-pc-windows-msvc)	7m 33s
Upload benchmark results	3m 22s
	1h 1m 54s

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