go: upgrade to Go 1.26 and modernize#458

ggilmore wants to merge 1 commit into

mainsourcegraph/deploy-sourcegraph-k8s:mainfrom

go-fix-modernize--270b1737-ed47-45a7-86f7-80feb79e95f9sourcegraph/deploy-sourcegraph-k8s:go-fix-modernize--270b1737-ed47-45a7-86f7-80feb79e95f9Copy head branch name to clipboard