fix: golangci lint was not passing anymore

[toby-bro]

This PR #1706 fixes the issue too but also did lots of things so opening a simpler PR just for fixing the CI

before

❯ golangci-lint run --color=always ./... --timeout=10m
WARN [lintersdb] The name "vet" is deprecated. The linter has been renamed to: govet. 
modules/gitter/widget.go:71:5: S1009: should omit nil check; len() for nil slices is defined as zero (gosimple)
        if widget.messages == nil || len(widget.messages) == 0 {
           ^

now it passes the ci

edit :
fixes #1721

[FelicianoTech]

This looks great. Thank you for the PR, and for your first one to the project at that! 👏🏽

[toby-bro]

@FelicianoTech I'd be really happy if you could also check out these two MR please 🙃 #1718 and #1719
Thanks for having accepted this one (I really was sad thinking this project had been abandonned)

[FelicianoTech]

@toby-bro No worries, I'll get to them. I plan to get to every open issue and PR that's on this project currently. If you haven't seen it, I posted a loose plan for the next two releases here: #1725

[toby-bro]

Sorry I hadn't seen it, seems great, thanks ! I'd be happy to help on stuff, didn't do much as I thought the project was dead but definitely interested into helping it thrive again.