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/compose/machines.go

@@ -11,7 +11,7 @@ const MachinesExtensionKey = "x-machines"
 type MachinesSource []string
 
 // DecodeMapstructure implements custom decoding for multiple input types
-func (m *MachinesSource) DecodeMapstructure(value interface{}) error {
+func (m *MachinesSource) DecodeMapstructure(value any) error {
 	switch v := value.(type) {
 	case *MachinesSource:
 		// Handle case where compose-go passes a pointer to an already created instance
@@ -38,7 +38,7 @@ func (m *MachinesSource) DecodeMapstructure(value interface{}) error {
 		}
 		*m = MachinesSource(machines)
 		return nil
-	case []interface{}:
+	case []any:
 		// Support interface array that may come from YAML parsing
 		machineNames := make([]string, 0, len(v))
 		for i, machine := range v {

pkg/client/compose/service.go

@@ -346,9 +346,7 @@ func dockerVolumeSpecFromCompose(serviceVolume types.ServiceVolumeConfig, volume
 func mergeLabels(labels ...types.Labels) types.Labels {
 	merged := types.Labels{}
 	for _, l := range labels {
-		for k, v := range l {
-			merged[k] = v
-		}
+		maps.Copy(merged, l)
 	}
 	return merged
 }

pkg/client/image.go

@@ -474,12 +474,10 @@ func toPushProgressEvent(jm jsonmessage.JSONMessage) *progress.Event {
 	percent := 0
 
 	if jm.Progress.Total > 0 {
-		percent = int(jm.Progress.Current * 100 / jm.Progress.Total)
-		// Cap percent at 100 to prevent index out of bounds in progress display.
-		// Docker can report Current > Total in some cases (e.g., compression).
-		if percent > 100 {
-			percent = 100
-		}
+		percent = min(
+			// Cap percent at 100 to prevent index out of bounds in progress display.
+			// Docker can report Current > Total in some cases (e.g., compression).
+			int(jm.Progress.Current*100/jm.Progress.Total), 100)
 	}
 
 	switch jm.Status {

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")
 	}