chore: upgrade golangci-lint to 2.11 and fix lint issues

Signed-off-by: Deluan <deluan@navidrome.org>

server/nativeapi/playlists.go

@@ -247,7 +247,7 @@ func uploadPlaylistImage(pls playlists.Playlists) http.HandlerFunc {
 		p := req.Params(r)
 		playlistId, _ := p.String(":id")
 
-		if err := r.ParseMultipartForm(maxImageSize); err != nil {
+		if err := r.ParseMultipartForm(maxImageSize); err != nil { //nolint:gosec // size is limited by maxImageSize parameter
 			log.Error(ctx, "Error parsing multipart form", err)
 			http.Error(w, "file too large or invalid form", http.StatusBadRequest)
 			return

server/subsonic/middlewares.go

@@ -31,9 +31,11 @@ import (
 
 func postFormToQueryParams(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		r.Body = http.MaxBytesReader(w, r.Body, 10<<20) // 10MB
 		err := r.ParseForm()
 		if err != nil {
 			sendError(w, r, newError(responses.ErrorGeneric, err.Error()))
+			return
 		}
 		var parts []string
 		for key, values := range r.Form {