Update module github.com/lpar/gzipped/v2 to v2.1.0

go.mod

go.sum

vendor/github.com/lpar/gzipped/v2/.gitattributes

vendor/github.com/lpar/gzipped/v2/.travis.yml

vendor/github.com/lpar/gzipped/v2/README.md

vendor/github.com/lpar/gzipped/v2/filesystem.go

vendor/github.com/lpar/gzipped/v2/go.mod

vendor/github.com/lpar/gzipped/v2/go.sum

vendor/github.com/lpar/gzipped/v2/testdata/file.txt

vendor/github.com/lpar/gzipped/v2/testdata/file.txt.gz

vendor/github.com/lpar/gzipped/v2/testdata/file2.txt

vendor/modules.txt