chore: upgrade golang.org/x/crypto to ^0.52.0 to address CVE-2026-39827#1363
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Force-upgrade x/crypto in the zoekt Docker build to a patched version (>= v0.52.0) to address CVE-2026-39827, where an authenticated SSH client repeatedly opening rejected channels could cause unbounded memory growth in the server. x/crypto enters the image only via the vendored zoekt Go build, so the upgrade is applied there. Generated with [Linear](https://linear.app/sourcebot/issue/SOU-1421/sourcebot-devsourcebot-cve-2026-39827-an-authenticated-ssh-client-that#agent-session-dd6262ca) Co-authored-by: linear-code[bot] <222613912+linear-code[bot]@users.noreply.github.com>
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Fixes SOU-1421
Addresses CVE-2026-39827 (HIGH) in
golang.org/x/crypto(v0.50.0 → v0.52.0), where an authenticated SSH client repeatedly opening rejected channels could cause unbounded memory growth in the server.x/cryptoenters the Sourcebot image only through the Go build of the vendoredzoektsubmodule, where it's an indirect dependency pinned at v0.50.0. The proper fix is to bump it insourcebot-dev/zoekt'sgo.modand then bump the submodule pointer here, but that requires a commit in the zoekt repo. As a self-contained mitigation, this forces the patched version into the zoekt build via the Dockerfile (go get golang.org/x/crypto@v0.52.0), so the compiled binaries embed v0.52.0.vendor/zoektpinsx/crypto >= v0.52.0directly.