Replace std::lock_guard and std::lock with std::scoped_lock (#1758)

std::scoped_lock was introduced in C++17 and is strictly better than
std::lock_guard as it supports locking any number of mutexes safely.
It's also easier to use than std::lock for locking multiple mutexes at
once.

wpilibc/src/main/native/cpp/DriverStation.cpp

@@ -490,7 +490,7 @@ void DriverStation::GetData() {
   }
 
   {
-    std::lock_guard waitLock(m_waitForDataMutex);
+    std::scoped_lock waitLock(m_waitForDataMutex);
     // Nofify all threads
     m_waitForDataCounter++;
     m_waitForDataCond.notify_all();