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>

pkg/client/logmerger_test.go

@@ -264,7 +264,7 @@ func TestLogMerger_UnevenStreams(t *testing.T) {
 	baseTime := time.Now()
 
 	// Stream 1 sends many entries quickly (0ms - 104ms).
-	for i := 0; i < numFastEntries; i++ {
+	for i := range numFastEntries {
 		ch1 <- testEntry(api.LogStreamStdout, baseTime.Add(time.Duration(i)*time.Millisecond), "fast")
 	}