[template] Test publishing hello-go template (#375)

## Summary
Before I move everything, I'm just testing that this simple hello-world
template in Go gets published (both image and code) properly.

## How was it tested?
CICD

---------

Co-authored-by: Rodrigo Ipince <ipince@users.noreply.github.com>

.github/workflows/publish-repos.yml

@@ -27,7 +27,7 @@ jobs:
     strategy:
       matrix:
         project_id: [dev-j3tpk, nonprod-j3tpk, prod-j3tpk]
-        template: []  # TODO: add templates
+        template: [hello-go]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4