chore: ensure TAG is passed in tag to test script

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
   test:
     runs-on: "ubuntu-latest"
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
       - run: "bundle install"
       - run: "bundle exec rake"

.github/workflows/update_gems.yml

@@ -68,6 +68,8 @@ jobs:
 
       - name: Integration tests
         run: script/test.sh
+        env:
+          TAG: latest
 
       - name: Git commit and push
         run: script/update-gems-workflow/git-commit-and-push-gemfile.sh

script/test.sh

@@ -2,6 +2,8 @@
 
 set -e
 
+: "${TAG:?TAG must be provided}"
+
 docker_compose_files=$(find . -name "docker-compose-test*.yml")
 
 for file in $docker_compose_files; do