Replace yaml.v2 with yaml.v3

[wolfogre]

I don't see why we have to use two versions of yaml. The difference between the two versions has nothing to do with our usage.

[wxiaoguang]

Related:

• use yaml.v3 library #19814

[6543]

that wont work as long as goldmark do use the old one

[wolfogre]

Related:

• use yaml.v3 library #19814

I might know why, v2 will decode a map into interface with type map[interface{}]interface{}, but v3 will do that with map[string]interface{}, that's what I got bitten in #21831.

Not really sure, I'll take some time to figure it out.

[wolfogre]

that wont work as long as goldmark do use the old one

I saw your attempt in yuin/goldmark-meta#6.

But I mean avoid using both versions in Gitea directly, I know we can't get rid of v2 version completely.

[lunny]

But at least, we can remove all direct dependencies on v2.

[techknowlogick]

LGTM

[wolfogre]

There are two little differences between yaml.v2 and yaml.v3 which broke the tests:

• The v2 decodes a map into interface with type map[interface{}]interface{}, but v3 does that with map[string]interface{};
• The v2 decodes a string like "2022-11-21T15:32:05+08:00" into interface with type string, but v3 does that with time.Time;

There's an example: https://go.dev/play/p/PqLD6tR75xF .