add g++ #9

Job	Run time
stable - x86_64-apple-darwin - node@20	1m 57s
stable - x86_64-pc-windows-msvc - node@20	6m 19s
stable - aarch64-apple-darwin - node@20	1m 46s
stable - x86_64-unknown-linux-gnu - node@20	2m 32s
stable - aarch64-unknown-linux-gnu - node@20	3m 9s
stable - aarch64-pc-windows-msvc - node@20	3m 13s
Test bindings on ${{ matrix.settings.target }} - node@${{ matrix.node }}	0s
Test bindings on Linux-x64-gnu - node@${{ matrix.node }}	0s
Test bindings on aarch64-unknown-linux-gnu - node@${{ matrix.node }}	0s
Test bindings on x86_64-unknown-linux-musl - node@${{ matrix.node }}	0s
Test bindings on aarch64-unknown-linux-musl - node@${{ matrix.node }}	0s
Test bindings on armv7-unknown-linux-gnueabihf - node@${{ matrix.node }}	0s
Build universal macOS binary	0s
	18m 56s

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