fix(security): guard feature tarball extraction against path traversa… #54

Job	Run time
lint-and-test	56s
e2e	1m 25s
parity-runtime	39m 41s
parity	1m 3s
cross-compile	37s
parity-runtime-full	0s
parity-runtime-arm64-experimental	0s
coverage-report	24s
	44m 6s

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