[build] Upgrade Gradle wrapper and plugins (#8767)

This fixes builds on JDK 26 for me.

wpilibj/src/main/java/org/wpilib/framework/RobotBase.java

@@ -315,6 +315,7 @@ public abstract class RobotBase implements AutoCloseable {
   }
 
   /** Run the robot main loop. */
+  @SuppressWarnings("PMD.AvoidCatchingGenericException")
   private static <T extends RobotBase> void runRobot(Class<T> robotClass) {
     System.out.println("********** Robot program starting **********");
 

wpilibj/src/main/java/org/wpilib/hardware/bus/SerialPort.java

@@ -198,7 +198,7 @@ public class SerialPort implements AutoCloseable {
   }
 
   /**
-   * Enable termination with the default terminator '\n'
+   * Enable termination with the default terminator '\n'.
    *
    * <p>Termination is currently only implemented for receive. When the terminator is received, the
    * read() or readString() will return fewer bytes than requested, stopping after the terminator.

wpilibj/src/main/java/org/wpilib/hardware/expansionhub/ExpansionHub.java

@@ -87,7 +87,7 @@ public class ExpansionHub implements AutoCloseable {
   private final DataStore m_dataStore;
 
   /**
-   * Constructs a new ExpansionHub for a given USB ID
+   * Constructs a new ExpansionHub for a given USB ID.
    *
    * <p>Multiple instances can be constructed, but will point to the same backing object with a ref
    * count.

wpilibj/src/main/java/org/wpilib/hardware/expansionhub/ExpansionHubServo.java

@@ -110,7 +110,7 @@ public class ExpansionHubServo implements AutoCloseable {
   }
 
   /**
-   * Sets the servo angle
+   * Sets the servo angle.
    *
    * <p>Servo angles range defaults to 0 to 180 degrees, but can be changed with setAngleRange().
    *

wpilibj/src/main/java/org/wpilib/hardware/motor/MotorSafety.java

@@ -31,7 +31,6 @@ public abstract class MotorSafety {
   private static final Object m_listMutex = new Object();
   private static Thread m_safetyThread;
 
-  @SuppressWarnings("PMD.AssignmentInOperand")
   private static void threadMain() {
     int event = WPIUtilJNI.makeEvent(false, false);
     DriverStationJNI.provideNewDataEventHandle(event);

wpilibj/src/main/java/org/wpilib/hardware/rotation/DutyCycleEncoder.java

@@ -170,7 +170,7 @@ public class DutyCycleEncoder implements Sendable, AutoCloseable {
   }
 
   /**
-   * Get if the sensor is connected
+   * Get if the sensor is connected.
    *
    * <p>This uses the duty cycle frequency to determine if the sensor is connected. By default, a
    * value of 100 Hz is used as the threshold, and this value can be changed with {@link