clang-tidy: modernize-use-override (NFC)

Add NOLINT to CommandTestBase due to gmock not adding "override" keyword,
which causes warnings on clang.

wpilibNewCommands/src/main/native/include/frc2/command/Command.h

@@ -49,7 +49,7 @@ class ProxyScheduleCommand;
 class Command : public frc::ErrorBase {
  public:
   Command() = default;
-  virtual ~Command();
+  ~Command() override;
 
   Command(const Command&);
   Command& operator=(const Command&);