ci: add vendor step before running deno tests

Author: mrstork

.github/workflows/deno-test.yml

@@ -12,5 +12,7 @@ jobs:
         uses: denoland/setup-deno@v1
         with:
           deno-version: v1.x.x
+      - name: Vendor Deno modules
+        run: deno vendor edge-runtime/vendor.ts --output=edge-runtime/vendor --force
       - name: Test
         run: deno test -A edge-runtime/

edge-runtime/vendor.ts

@@ -12,5 +12,6 @@ import 'https://deno.land/std@0.175.0/path/mod.ts'
 
 import 'https://deno.land/x/path_to_regexp@v6.2.1/index.ts'
 import 'https://deno.land/x/htmlrewriter@v1.0.0/src/index.ts'
+import 'https://deno.land/x/std@0.175.0/http/cookie.ts'
 
 import 'https://v1-7-0--edge-utils.netlify.app/logger/mod.ts'