Fix typo casted -> cast

(cherry picked from commit b174f067df18e3214f290c62d50f6721e87c05cf)

test/governance/Governor.test.js

@@ -440,7 +440,7 @@ contract('Governor', function (accounts) {
               voter: voter1,
               weight: web3.utils.toWei('5'),
               support: Enums.VoteType.For,
-              error: 'GovernorVotingSimple: vote already casted',
+              error: 'GovernorVotingSimple: vote already cast',
             },
           ],
         };

test/governance/compatibility/GovernorCompatibilityBravo.test.js

@@ -110,7 +110,7 @@ contract('GovernorCompatibilityBravo', function (accounts) {
           {
             voter: voter1,
             support: Enums.VoteType.For,
-            error: 'GovernorCompatibilityBravo: vote already casted',
+            error: 'GovernorCompatibilityBravo: vote already cast',
             skip: true,
           },
         ],
@@ -296,7 +296,7 @@ contract('GovernorCompatibilityBravo', function (accounts) {
           {
             voter: voter1,
             support: Enums.VoteType.For,
-            error: 'GovernorCompatibilityBravo: vote already casted',
+            error: 'GovernorCompatibilityBravo: vote already cast',
             skip: true,
           },
         ],