update gh actions and go versions, update deprecated ioutil

[davidbloss]

Version Updates

• Update Github Actions since these actions are built on deprecated node12 tagged actions.
• Update Go module version to 1.20. The EOL of current Go version 1.16 was on 15 Mar 2022.
• Update ioutil.ReadAll to io.ReadAll

All go.mod updates were a result of setting go 1.20 in go.mod then running go get -u ./... followed by go mod tidy.

[hgiasac]

Hi @davidbloss
Thanks for contributing. Anyway, the coverage tool doesn't support the latest Go version I guess. Can you help remove that step to pass the test? Thanks

[davidbloss]

Hi @davidbloss Thanks for contributing. Anyway, the coverage tool doesn't support the latest Go version I guess. Can you help remove that step to pass the test? Thanks

Hi @hgiasac 👋
I think it should work by replacing "go get" with "go install" see deprecation notice

[hgiasac]

Thanks for your hard work. There is another issue, but I'll take it up to save your time