update .gitignore

hc

2024-03-26 e9199a72d842cbda78ac614eee5db7cdaa6f2530

1
net/ieee802154/6lowpan/core.o net/ieee802154/6lowpan/rx.o net/ieee802154/6lowpan/reassembly.o net/ieee802154/6lowpan/tx.o