feat(upgrade): add minimal admin-gated upgrade to slim build - #1475

feat(upgrade): add minimal admin-gated upgrade to slim build#1475

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Abayomi-fx:security/issue-1458-make-the-testnet-contract-upgradeable-by-addingAbayomi-fx/predictify-contracts:security/issue-1458-make-the-testnet-contract-upgradeable-by-addingCopy head branch name to clipboard