chore: add installation of dependencies for i686-unknown-linux-gnu #459

Job	Run time
Cross checking x86_64-pc-windows-msvc on stable	2m 49s
Cross checking x86_64-pc-windows-gnu on stable	8m 57s
Cross checking x86_64-apple-darwin on stable	4m 17s
Cross checking aarch64-apple-darwin on stable	47s
Cross checking x86_64-unknown-linux-gnu on stable	36s
Cross checking x86_64-unknown-linux-musl on stable	57s
Cross checking aarch64-unknown-linux-gnu on stable	54s
Cross checking aarch64-unknown-linux-musl on stable	1m 28s
Cross checking i686-unknown-linux-gnu on stable	3m 55s
Cross checking x86_64-unknown-netbsd on stable	59s
Cross checking armv7-unknown-linux-gnueabihf on stable	44s
Result (Cross-CI)	1s
	26m 24s

Provide feedback