Bump @openzeppelin/contracts from 4.5.0 to 4.7.1 in /packages/pns-contracts#5

dependabot[bot] wants to merge 1 commit intomasterbjackson/pns:masterfrom

dependabot/npm_and_yarn/packages/pns-contracts/openzeppelin/contracts-4.7.1bjackson/pns:dependabot/npm_and_yarn/packages/pns-contracts/openzeppelin/contracts-4.7.1Copy head branch name to clipboard