ci(deps): enable and fix whitespace linter

[mmorel-35]

Description

enable and fix whitespace linter

[knqyf263]

Some people prefer having a whitespace at the beginning of functions.

[mmorel-35]

I don't see any option for that on whitespace (https://golangci-lint.run/usage/linters/#whitespace) Would gofmt or gofumpt be able to ensure that ?

[knqyf263]

This option seems to make sense to me. In other cases, whitespace is not necessary.

    # Enforces newlines (or comments) after every multi-line function signature.
    # Default: false
    multi-func: true