Cut PR build time: stop deleting the Hugo image cache, drop GOGC=3 - #21060

Cut PR build time: stop deleting the Hugo image cache, drop GOGC=3#21060

CamSoper wants to merge 4 commits into

masterpulumi/docs:masterfrom

claude/pull-request-build-times-y9ejmrpulumi/docs:claude/pull-request-build-times-y9ejmrCopy head branch name to clipboard