deploy: increase test timeout to 20 minutes

- Build failing due to insufficient test timeout.
- Failing build: 27812b6c-f689-4f90-bada-b87abd723039

Change-Id: Ib24d6c1ddd0e5c3d98d41c2b223076e78d32b64d
Reviewed-on: https://go-review.googlesource.com/c/vulndb/+/743560
Reviewed-by: Nicholas Husin <nsh@golang.org>
Reviewed-by: Nicholas Husin <husin@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ethan Lee <ethanalee@google.com>

deploy/build.yaml

diff --git a/deploy/build.yaml b/deploy/build.yaml
index ec3a32c..ad2508c 100644
--- a/deploy/build.yaml
+++ b/deploy/build.yaml
@@ -27,7 +27,7 @@
     entrypoint: bash
     args:
       - -ec
-      - go test ./...
+      - go test -timeout 20m ./...
 
   - id: Govulncheck
     name: golang:1.25.6