chore: use math.Int instead of math.Int and apply linting (#12702)

* linting round

* fix changelog

* revert docs changes

* Update CHANGELOG.md

* revert an accidental change to security.md

* Update simapp/integration/client/grpc/tmservice/service_test.go

Co-authored-by: Julien Robert <julien@rbrt.fr>

x/staking/module.go

@@ -4,11 +4,12 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"math/rand"
+	"sort"
+
 	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
 	govtypes "github.com/cosmos/cosmos-sdk/x/gov/types"
 	"github.com/cosmos/cosmos-sdk/x/staking/exported"
-	"math/rand"
-	"sort"
 
 	gwruntime "github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/spf13/cobra"
@@ -160,11 +161,9 @@ func (am AppModule) RegisterServices(cfg module.Configurator) {
 	m := keeper.NewMigrator(am.keeper, am.legacySubspace)
 	if err := cfg.RegisterMigration(types.ModuleName, 1, m.Migrate1to2); err != nil {
 		panic(fmt.Sprintf("failed to migrate x/%s from version 1 to 2: %v", types.ModuleName, err))
-
 	}
 	if err := cfg.RegisterMigration(types.ModuleName, 2, m.Migrate2to3); err != nil {
 		panic(fmt.Sprintf("failed to migrate x/%s from version 2 to 3: %v", types.ModuleName, err))
-
 	}
 	if err := cfg.RegisterMigration(types.ModuleName, 3, m.Migrate3to4); err != nil {
 		panic(fmt.Sprintf("failed to migrate x/%s from version 3 to 4: %v", types.ModuleName, err))