The config file format changed. The tool golangci-lint migrate
was used to migrate the old config. However old comments and also
the structure of the disabled linters was preserved.
Moreover the new v2 version introduced new linters, we disable
3 of them because they are very noise and we do not really want
to check for them: funcorder, noinlineerr, embeddedstructfieldcheck.
Bump all build go versions to v1.21.0
Bump the minimum build package version to v1.19.0
Debian "buster" is not longer supported. Security updates have been
discontinued since June 30th 2022. We will build using the latest
version, "bookworm".
This commit updates the tool `golangci-lint` to the latest version that
has fixed a bug in the linter `paralleltest`. Also `go mod tidy` is run
inside `tool`, and `nosnakecase` is disabled as it's deprecated.
ziggie