tests: Add no cover pragmas

taas_client/cli.py

@@ -101,4 +101,4 @@ def upload_file(
 
 
 if __name__ == "__main__":
-    app()
+    app()  # pragma: no cover

tests/test_cli.py

@@ -87,7 +87,7 @@ class TestArgumentParsing:
         nb_path.touch()
         nb_path.chmod(0)
         if os.access(nb_path, os.R_OK):
-            pytest.skip("failed to make file unreadable")
+            pytest.skip("failed to make file unreadable")  # pragma: no cover
 
         result = runner.invoke(cli.app, [str(nb_path)])
         print(result.stdout)