chore: modernize the codebase using go 1.26 (#278)

This runs:

```
go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix ./...
```

over the codebase, as this is using go 1.26, it can also use the new
new() functionallity so AsPtr and boolPtr is are needed anymore.

Signed-off-by: Miek Gieben <miek@miek.nl>

test/e2e/service_test.go

@@ -1052,7 +1052,7 @@ myapp.example.com {
 		// Machine 0: vol1, vol2
 		// Machine 1: vol1, vol2
 		// Machine 2: vol1
-		for i := 0; i < 3; i++ {
+		for i := range 3 {
 			_, err := cli.CreateVolume(ctx, c.Machines[i].Name, volume.CreateOptions{Name: vol1Name})
 			require.NoError(t, err)
 			if i < 2 {