Add moto as a dependency

pyproject.toml

@@ -99,6 +99,7 @@ dependencies = [
     "docker~=7.1.0",
     "pytest~=8.3.2",
     "pytest-docker~=3.1.1",
+    "moto[s3]>=5.0.26",
 
     "googleapis-common-protos==1.63.2",