chore: bump golangci-lint and fix all linting issues (#21761)

x/staking/simulation/decoder_test.go

@@ -46,7 +46,6 @@ func TestDecodeStore(t *testing.T) {
 		{"other", ""},
 	}
 	for i, tt := range tests {
-		i, tt := i, tt
 		t.Run(tt.name, func(t *testing.T) {
 			switch i {
 			case len(tests) - 1:

x/staking/simulation/genesis_test.go

@@ -109,8 +109,6 @@ func TestRandomizedGenState1(t *testing.T) {
 	}
 
 	for _, tt := range tests {
-		tt := tt
-
 		require.Panicsf(t, func() { simulation.RandomizedGenState(&tt.simState) }, tt.panicMsg)
 	}
 }