fix(spanner): Revert "chore(spanner): Issue#1143 - Update dependency"#1197

harshachinta merged 1 commit intomaingoogleapis/python-spanner:mainfrom

revert-1158-Issue1143-update-dependenciesgoogleapis/python-spanner:revert-1158-Issue1143-update-dependenciesCopy head branch name to clipboard