update lean toolchain to v4.28.0#64
Open
abdoo8080 wants to merge 1 commit intoleanprover-community:mainfrom
Open
update lean toolchain to v4.28.0#64abdoo8080 wants to merge 1 commit intoleanprover-community:mainfrom
abdoo8080 wants to merge 1 commit intoleanprover-community:mainfrom