Update OZ contracts version to 4.9.6

package.json

@@ -23,8 +23,8 @@
   "dependencies": {
     "@ensdomains/ens-contracts": "^0.0.7",
     "@gnosis.pm/safe-ethers-lib": "^1.1.0",
-    "@openzeppelin/contracts": "4.7.0",
-    "@openzeppelin/contracts-upgradeable": "4.7.0"
+    "@openzeppelin/contracts": "4.9.6",
+    "@openzeppelin/contracts-upgradeable": "4.9.6"
   },
   "devDependencies": {
     "@ethersproject/experimental": "^5.4.0",

yarn.lock

@@ -1226,17 +1226,12 @@
     ethers "^4.0.0-beta.1"
     source-map-support "^0.5.19"
 
-"@openzeppelin/[email protected]":
-  version "4.7.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-4.7.0.tgz#6437261286879d353f6de7bf3ac8216bef8a486d"
-  integrity sha512-wO3PyoAaAV/rA77cK8H4c3SbO98QylTjfiFxyvURUZKTFLV180rnAvna1x7/Nxvt0Gqv+jt1sXKC7ygxsq8iCw==
-
-"@openzeppelin/[email protected]":
-  version "4.7.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.7.0.tgz#3092d70ea60e3d1835466266b1d68ad47035a2d5"
-  integrity sha512-52Qb+A1DdOss8QvJrijYYPSf32GUg2pGaG/yCxtaA3cu4jduouTdg4XZSMLW9op54m1jH7J8hoajhHKOPsoJFw==
+"@openzeppelin/[email protected]":
+  version "4.9.6"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-4.9.6.tgz#38b21708a719da647de4bb0e4802ee235a0d24df"
+  integrity sha512-m4iHazOsOCv1DgM7eD7GupTJ+NFVujRZt1wzddDPSVGpWdKq1SKkla5htKG7+IS4d2XOCtzkUNwRZ7Vq5aEUMA==
 
-"@openzeppelin/contracts@^4.0.0", "@openzeppelin/contracts@^4.1.0":
+"@openzeppelin/contracts@4.9.6", "@openzeppelin/contracts@^4.0.0", "@openzeppelin/contracts@^4.1.0":
   version "4.9.6"
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.9.6.tgz#2a880a24eb19b4f8b25adc2a5095f2aa27f39677"
   integrity sha512-xSmezSupL+y9VkHZJGDoCBpmnB2ogM13ccaYDWqJTfS3dbuHkgjuwDFUmaFauBCboQMGB/S5UqUl2y54X99BmA==