fix(lint): golang-client lint errors (#3924)

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Closes #3919
## Overview

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Fix the lint errors of golangci-lint.
Merge this [PR](#3923)
to this branch.

.golangci.yml

@@ -4,7 +4,7 @@ run:
 
 linters:
   enable:
-    - exportloopref
+    - copyloopvar
     - gofumpt
     - misspell
     - nakedret

app/test/priority_test.go

@@ -80,7 +80,6 @@ func (s *PriorityTestSuite) TestPriorityByGasPrice() {
 	wg := &sync.WaitGroup{}
 	for _, accName := range s.accountNames {
 		wg.Add(1)
-		accName := accName // new variable per iteration
 		go func() {
 			defer wg.Done()
 			// ensure that it is greater than the min gas price

pkg/da/data_availability_header_test.go

@@ -88,7 +88,6 @@ func TestExtendShares(t *testing.T) {
 	}
 
 	for _, tt := range tests {
-		tt := tt
 		_, err := ExtendShares(tt.shares)
 		if tt.expectedErr {
 			require.NotNil(t, err)
@@ -122,7 +121,6 @@ func TestDataAvailabilityHeaderProtoConversion(t *testing.T) {
 	}
 
 	for _, tt := range tests {
-		tt := tt
 		pdah, err := tt.dah.ToProto()
 		require.NoError(t, err)
 		resDah, err := DataAvailabilityHeaderFromProto(pdah)
@@ -203,7 +201,6 @@ func Test_DAHValidateBasic(t *testing.T) {
 	}
 
 	for _, tt := range tests {
-		tt := tt
 		err := tt.dah.ValidateBasic()
 		if tt.expectErr {
 			require.True(t, strings.Contains(err.Error(), tt.errStr), tt.name)

x/blob/client/testutil/integration_test.go

@@ -143,7 +143,6 @@ func (s *IntegrationTestSuite) TestSubmitPayForBlob() {
 	}
 
 	for _, tc := range testCases {
-		tc := tc
 		require.NoError(s.ctx.WaitForNextBlock())
 		s.Run(tc.name, func() {
 			cmd := paycli.CmdPayForBlob()

x/blobstream/keeper/keeper_data_commitment.go

@@ -109,7 +109,7 @@ func (k Keeper) GetLatestDataCommitment(ctx sdk.Context) (types.DataCommitment,
 			return types.DataCommitment{}, err
 		}
 		if !found {
-			return types.DataCommitment{}, errors.Wrapf(types.ErrAttestationNotFound, fmt.Sprintf("nonce %d", i))
+			return types.DataCommitment{}, errors.Wrapf(types.ErrAttestationNotFound, "nonce %d", i)
 		}
 		dcc, ok := att.(*types.DataCommitment)
 		if !ok {
@@ -136,7 +136,7 @@ func (k Keeper) HasDataCommitmentInStore(ctx sdk.Context) (bool, error) {
 			return false, err
 		}
 		if !found {
-			return false, errors.Wrapf(types.ErrAttestationNotFound, fmt.Sprintf("nonce %d", i))
+			return false, errors.Wrapf(types.ErrAttestationNotFound, "nonce %d", i)
 		}
 		_, ok := att.(*types.DataCommitment)
 		if !ok {

x/blobstream/keeper/keeper_valset_test.go

@@ -57,7 +57,6 @@ func TestCurrentValsetNormalization(t *testing.T) {
 		},
 	}
 	for msg, spec := range specs {
-		spec := spec
 		t.Run(msg, func(t *testing.T) {
 			input, ctx := testutil.SetupTestChain(t, spec.srcPowers)
 			r, err := input.BlobstreamKeeper.GetCurrentValset(ctx)

x/mint/client/testutil/suite_test.go

@@ -68,8 +68,6 @@ func (s *IntegrationTestSuite) TestGetCmdQueryInflationRate() {
 	}
 
 	for _, tc := range testCases {
-		tc := tc
-
 		s.Run(tc.name, func() {
 			cmd := cli.GetCmdQueryInflationRate()
 
@@ -103,8 +101,6 @@ func (s *IntegrationTestSuite) TestGetCmdQueryAnnualProvisions() {
 
 	expectedAnnualProvision := mint.InitialInflationRateAsDec().MulInt(sdk.NewInt(testnode.DefaultInitialBalance))
 	for _, tc := range testCases {
-		tc := tc
-
 		s.Run(tc.name, func() {
 			cmd := cli.GetCmdQueryAnnualProvisions()
 			out, err := clitestutil.ExecTestCLICmd(s.cctx.Context, cmd, tc.args)
@@ -134,8 +130,6 @@ func (s *IntegrationTestSuite) TestGetCmdQueryGenesisTime() {
 	}
 
 	for _, tc := range testCases {
-		tc := tc
-
 		s.Run(tc.name, func() {
 			cmd := cli.GetCmdQueryGenesisTime()
 			out, err := clitestutil.ExecTestCLICmd(s.cctx.Context, cmd, tc.args)

x/mint/simulation/decoder_test.go

@@ -51,7 +51,6 @@ func TestDecodeStore(t *testing.T) {
 	}
 
 	for i, tt := range tests {
-		i, tt := i, tt
 		t.Run(tt.name, func(t *testing.T) {
 			if tt.expectPanic {
 				require.Panics(t, func() { decoder(kvPairs.Pairs[i], kvPairs.Pairs[i]) }, tt.name)