I would split the money in two:

Half in a 2-year Treasury note - example CUSIP 91282CDZ1 yielding 4.803% to maturity on 2/15/2025.

Half in a money market mutual fund - example SWVXX or VMFXX, yielding 4.5% currently.

The T-note locks in a decent return, should interest rates fall in the next two years. The MMF on the other hand will quickly increase in yield if interest rates continue to rise. By holding both you have an interest-rate neutral holding yielding significantly more than your HYSA.