go: upgrade to Go 1.26 and modernize#164

ggilmore wants to merge 1 commit into

mastersourcegraph/checkup:masterfrom

go-fix-modernize--270b1737-ed47-45a7-86f7-80feb79e95f9sourcegraph/checkup:go-fix-modernize--270b1737-ed47-45a7-86f7-80feb79e95f9Copy head branch name to clipboard