perf(cache): use gzip.BestSpeed compression level when creating cache tarball archives
perf(cache): use gzip.BestSpeed compression level when creating cache tarball archives

bleenco/abstruse,jkuri/abstruse,bleenco/abstruse,jkuri/abstruse,bleenco/abstruse,jkuri/abstruse,jkuri/abstruse,bleenco/abstruse,bleenco/abstruse