Don't run arm64 on every commit (#13384)
Don't run arm64 on every commit (#13384)

We cannot keep up currently

@jashook PTAL
hseok-oh/coreclr,cshung/coreclr,JonHanna/coreclr,kyulee1/coreclr,wateret/coreclr,yizhang82/coreclr,yizhang82/coreclr,AlexGhiondea/coreclr,russellhadley/coreclr,tijoytom/coreclr,wateret/coreclr,rartemev/coreclr,russellhadley/coreclr,poizan42/coreclr,mskvortsov/coreclr,cshung/coreclr,wateret/coreclr,JosephTremoulet/coreclr,krk/coreclr,rartemev/coreclr,rartemev/coreclr,krk/coreclr,mmitche/coreclr,wateret/coreclr,poizan42/coreclr,ruben-ayrapetyan/coreclr,mskvortsov/coreclr,mmitche/coreclr,JonHanna/coreclr,wtgodbe/coreclr,mmitche/coreclr,AlexGhiondea/coreclr,rartemev/coreclr,AlexGhiondea/coreclr,poizan42/coreclr,hseok-oh/coreclr,kyulee1/coreclr,JosephTremoulet/coreclr,rartemev/coreclr,botaberg/coreclr,russellhadley/coreclr,russellhadley/coreclr,yizhang82/coreclr,ruben-ayrapetyan/coreclr,wtgodbe/coreclr,JosephTremoulet/coreclr,kyulee1/coreclr,JonHanna/coreclr,krk/coreclr,dpodder/coreclr,cshung/coreclr,JosephTremoulet/coreclr,botaberg/coreclr,hseok-oh/coreclr,mskvortsov/coreclr,kyulee1/coreclr,ruben-ayrapetyan/coreclr,rartemev/coreclr,tijoytom/coreclr,dpodder/coreclr,tijoytom/coreclr,ruben-ayrapetyan/coreclr,yizhang82/coreclr,dpodder/coreclr,mmitche/coreclr,tijoytom/coreclr,parjong/coreclr,dpodder/coreclr,botaberg/coreclr,hseok-oh/coreclr,hseok-oh/coreclr,botaberg/coreclr,JonHanna/coreclr,hseok-oh/coreclr,parjong/coreclr,krk/coreclr,wtgodbe/coreclr,mskvortsov/coreclr,mskvortsov/coreclr,AlexGhiondea/coreclr,JonHanna/coreclr,wtgodbe/coreclr,cshung/coreclr,wtgodbe/coreclr,poizan42/coreclr,AlexGhiondea/coreclr,parjong/coreclr,wtgodbe/coreclr,parjong/coreclr,dpodder/coreclr,russellhadley/coreclr,dpodder/coreclr,cshung/coreclr,mmitche/coreclr,parjong/coreclr,JosephTremoulet/coreclr,yizhang82/coreclr,poizan42/coreclr,krk/coreclr,AlexGhiondea/coreclr,botaberg/coreclr,JosephTremoulet/coreclr,mmitche/coreclr,parjong/coreclr,tijoytom/coreclr,JonHanna/coreclr,kyulee1/coreclr,krk/coreclr,poizan42/coreclr,botaberg/coreclr,tijoytom/coreclr,mskvortsov/coreclr,wateret/coreclr,wateret/coreclr,yizhang82/coreclr,cshung/coreclr,russellhadley/coreclr,kyulee1/coreclr,ruben-ayrapetyan/coreclr,ruben-ayrapetyan/coreclr