Adding a minor variable visibility fix

src/main/java/frc/robot/subsystems/Drivetrain.java

@@ -46,7 +46,7 @@ public class Drivetrain extends SubsystemBase {
     private final IVisualPoseProvider m_visualPoseProvider;
 
     // Odometry class for tracking robot pose
-    SwerveDrivePoseEstimator m_poseEstimator;
+    private final SwerveDrivePoseEstimator m_poseEstimator;
 
     // Slew rate filter variables for controlling lateral acceleration
     private double m_currentRotation;