Added installing command in workflow

Author: suprith-hub

.github/workflows/show_specification_annotations.yml

@@ -12,6 +12,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Install dependencies
+        run: pip install uritemplate
+
       - name: Generate Annotations
         uses: actions/setup-python@v5
         with: