pin zeppelin to 4.7.3

packages/contracts-periphery/package.json

@@ -64,7 +64,7 @@
     "@nomiclabs/hardhat-etherscan": "^3.0.3",
     "@nomiclabs/hardhat-waffle": "^2.0.3",
     "@rari-capital/solmate": "7.0.0-alpha.3",
-    "@openzeppelin/contracts": "^4.8.0",
+    "@openzeppelin/contracts": "4.7.3",
     "@openzeppelin/contracts-upgradeable": "4.7.3",
     "@types/chai": "^4.2.18",
     "@types/mocha": "^8.2.2",

yarn.lock

@@ -3232,11 +3232,6 @@
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.4.0.tgz#4a1df71f736c31230bbbd634dfb006a756b51e6b"
   integrity sha512-dlKiZmDvJnGRLHojrDoFZJmsQVeltVeoiRN7RK+cf2FmkhASDEblE0RiaYdxPNsUZa6mRG8393b9bfyp+V5IAw==
 
-"@openzeppelin/contracts@^4.8.0":
-  version "4.8.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.8.0.tgz#6854c37df205dd2c056bdfa1b853f5d732109109"
-  integrity sha512-AGuwhRRL+NaKx73WKRNzeCxOCOCxpaqF+kp8TJ89QzAipSwZy/NoflkWaL9bywXFRhIzXt8j38sfF7KBKCPWLw==
-
 "@primitivefi/hardhat-dodoc@^0.1.3":
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/@primitivefi/hardhat-dodoc/-/hardhat-dodoc-0.1.3.tgz#338ecff24b93d3b43fa35a98909f6840af86c27c"