add changelog entry #20

Job	Run time
NIF 2.16 - arm-unknown-linux-gnueabihf (ubuntu-20.04)	1m 9s
NIF 2.16 - aarch64-unknown-linux-gnu (ubuntu-20.04)	1m 12s
NIF 2.16 - aarch64-unknown-linux-musl (ubuntu-20.04)	1m 0s
NIF 2.16 - aarch64-apple-darwin (macos-11)	1m 35s
NIF 2.16 - riscv64gc-unknown-linux-gnu (ubuntu-20.04)	1m 2s
NIF 2.16 - x86_64-apple-darwin (macos-11)	1m 24s
NIF 2.16 - x86_64-unknown-linux-gnu (ubuntu-20.04)	27s
NIF 2.16 - x86_64-unknown-linux-musl (ubuntu-20.04)	47s
NIF 2.16 - x86_64-pc-windows-gnu (windows-2022)	1m 24s
NIF 2.16 - x86_64-pc-windows-msvc (windows-2019)	1m 10s
NIF 2.16 - x86_64-unknown-freebsd (ubuntu-22.04)	52s
NIF 2.15 - arm-unknown-linux-gnueabihf (ubuntu-20.04)	48s
NIF 2.15 - aarch64-unknown-linux-gnu (ubuntu-20.04)	1m 20s
NIF 2.15 - aarch64-unknown-linux-musl (ubuntu-20.04)	1m 8s
NIF 2.15 - aarch64-apple-darwin (macos-11)	1m 12s
NIF 2.15 - riscv64gc-unknown-linux-gnu (ubuntu-20.04)	46s
NIF 2.15 - x86_64-apple-darwin (macos-11)	1m 9s
NIF 2.15 - x86_64-unknown-linux-gnu (ubuntu-20.04)	27s
NIF 2.15 - x86_64-unknown-linux-musl (ubuntu-20.04)	55s
NIF 2.15 - x86_64-pc-windows-gnu (windows-2022)	1m 19s
NIF 2.15 - x86_64-pc-windows-msvc (windows-2019)	1m 18s
NIF 2.15 - x86_64-unknown-freebsd (ubuntu-22.04)	46s
	23m 10s

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