2054-2060+? Super rough estimate but considering Leslie and Fam is each 0X.5 and other characters are .0X with maybe 2 updates a year that's 1 character or combo update plus a Leslie and Fam update each year.
Too many variables like weeks off and injuries, team change ups, some characters seem to be combo character updates, some will get more updates than others, and who knows how many Leslie and Fam updates there will be or other story updates with who knows who plus characters coming back it seems it may span much longer than possible for one reason or another as this is unheard of save for maybe Summertime Saga but that fell off for a few reasons.
Edit: 20-26 updates left after v.07= My ROUGH est is...
8-9 months/update
9 x20-26 = 180-234 months Divide 12 (M/Y) = 15-19.5 years = 2040-2045+