Fixed github action (#3)

Author: NicolasMarlier

.github/.workflows/specs.yml

@@ -0,0 +1,24 @@
+name: Specs
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  license_checks:
+    name: License checks
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+      - name: Run license checks
+        run: |
+          bundle exec license_finder || (cat <<-END && exit 1)
+
+            You seem to be introducing a new license into our stack, please reach out to
+            #licenses-tech-stack on slack to get guidance on the topic.
+          END