* Update Go to 1.21.
* Update minimum Go version to 1.19.
* Fixup deprecated `io/ioutil`.
* Move errcheck excludes inline.
Signed-off-by: SuperQ <superq@gmail.com>
Add the exporter-toolkit to support TLS and authentication.
* Cleanup error throwaway in logging calls.
* Bump Go modules.
Signed-off-by: SuperQ <superq@gmail.com>