have it scan terraform files as well (#33)

Signed-off-by: Kenny Leung <[email protected]>

Author: k4leung4

action.yml

@@ -107,7 +107,7 @@ runs:
                 fi
               done
           fi
-        done < <(find "${{ inputs.working-dir }}" -type f \( -name "*.yaml" -o -name "*.yml" -o -name "Dockerfile*" -o -name "Makefile*" -o -name "*.sh" \) -print0)
+        done < <(find "${{ inputs.working-dir }}" -type f \( -name "*.yaml" -o -name "*.yml" -o -name "Dockerfile*" -o -name "Makefile*" -o -name "*.sh" -o -name "*.tf" -o -name "*.tfvars" \) -print0)
 
     - name: Check workspace
       id: create_pr_update