chore: build with Go 1.26; use Go 1.25 features (#10570)

WaitGroup.Go and built-in gomaxprocs handling.

Signed-off-by: Jakob Borg <jakob@kastelo.net>

test/delay_scan_test.go

@@ -43,17 +43,14 @@ func TestRescanWithDelay(t *testing.T) {
 	var wg sync.WaitGroup
 	log.Println("Starting scans...")
 	for j := 0; j < 20; j++ {
-		j := j
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
+		wg.Go(func() {
 			err := st.RescanDelay("default", 1)
 			log.Println(j)
 			if err != nil {
 				log.Println(err)
 				t.Fatal(err)
 			}
-		}()
+		})
 	}
 
 	wg.Wait()

test/parallel_scan_test.go

@@ -42,17 +42,14 @@ func TestRescanInParallel(t *testing.T) {
 	var wg sync.WaitGroup
 	log.Println("Starting scans...")
 	for j := 0; j < 20; j++ {
-		j := j
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
+		wg.Go(func() {
 			err := st.Rescan("default")
 			log.Println(j)
 			if err != nil {
 				log.Println(err)
 				t.Fatal(err)
 			}
-		}()
+		})
 	}
 
 	wg.Wait()