Refactor EnsureLogFilePath function in zaplogger_logpath.go to use mo…

…re restrictive directory permissions

logger/zaplogger_logpath.go

@@ -31,7 +31,7 @@ func EnsureLogFilePath(logPath string) (string, error) {
 
 	// Ensure the directory exists
 	dir := filepath.Dir(logPath)
-	if err := os.MkdirAll(dir, 0755); err != nil {
+	if err := os.MkdirAll(dir, 0750); err != nil {
 		return "", err
 	}