feat(ci): update golangci-lint and action (#325)

* Update linter

- Update Github golangci-lint-action to v3
- Update golangci-lint to v1.52.2

* Fix linter issues after updating to linter 1.52.2

server/ctrlsubsonic/handlers_by_folder.go

@@ -279,7 +279,7 @@ func (c *Controller) ServeSearchTwo(r *http.Request) *spec.Response {
 	return sub
 }
 
-func (c *Controller) ServeGetArtistInfo(r *http.Request) *spec.Response {
+func (c *Controller) ServeGetArtistInfo(_ *http.Request) *spec.Response {
 	return spec.NewResponse()
 }