chore: add modernizer linter (#11936)

- Go has a suite of small linters that helps with modernizing Go code by using newer functions and catching small mistakes, https://pkg.go.dev/golang.org/x/tools/go/analysis/passes/modernize.
- Enable this linter in golangci-lint.
- There's also [`go fix`](https://go.dev/blog/gofix), which is not yet released as a linter in golangci-lint: https://github.com/golangci/golangci-lint/pull/6385

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/11936
Reviewed-by: Mathieu Fenniak <mfenniak@noreply.codeberg.org>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>

models/actions/status.go

@@ -4,6 +4,8 @@
 package actions
 
 import (
+	"slices"
+
 	"forgejo.org/modules/translation"
 
 	runnerv1 "code.forgejo.org/forgejo/actions-proto/runner/v1"
@@ -107,12 +109,7 @@ func (s Status) IsBlocked() bool {
 
 // In returns whether s is one of the given statuses
 func (s Status) In(statuses ...Status) bool {
-	for _, v := range statuses {
-		if s == v {
-			return true
-		}
-	}
-	return false
+	return slices.Contains(statuses, s)
 }
 
 func (s Status) AsResult() runnerv1.Result {