Currently unmaintained package `github.com/jaytaylor/html2text` is
replaced using `replace` directive. Instead, the correct package
`github.com/Necoro/html2text` should be referenced directly in code.
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Co-authored-by: Giteabot <teabot@gitea.io>
Move all mail sender related codes into a sub package of
services/mailer. Just move, no code change.
Then we just have dependencies on go-mail package in the new sub
package. We can use other package to replace it because it's
unmaintainable. ref #18664
Lunny Xiao
Chongyi Zheng
wxiaoguang