Add Governor signature nonces (#4378)

Co-authored-by: Hadrien Croubois <hadrien.croubois@gmail.com>
Co-authored-by: Francisco <fg@frang.io>
Co-authored-by: Sergei Tikhomirov <sergey.s.tikhomirov@gmail.com>
Co-authored-by: Renan Souza <renan.rodrigues.souza1@gmail.com>

hardhat.config.js

@@ -78,6 +78,7 @@ module.exports = {
   warnings: {
     'contracts-exposed/**/*': {
       'code-size': 'off',
+      'initcode-size': 'off',
     },
     '*': {
       'code-size': withOptimizations,