ci: Install gcc-aarch64-linux-gnu for gnd cross-compilation #11414

Job	Run time
Build in release mode	1m 31s
Run unit tests	3m 19s
Clippy linting	1m 45s
Run integration tests	5m 8s
Check rustfmt style	17s
Subgraph Runner integration tests	2m 58s
	14m 58s

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