Replace interface{} with any (#25686) (#25687)

Same perl replacement as https://github.com/go-gitea/gitea/pull/25686
but for 1.20 to ease future backporting.

modules/graceful/manager.go

@@ -283,7 +283,7 @@ func (g *Manager) Err() error {
 }
 
 // Value allows the manager to be viewed as a context.Context done at Terminate
-func (g *Manager) Value(key interface{}) interface{} {
+func (g *Manager) Value(key any) any {
 	return g.managerCtx.Value(key)
 }