switch some exp pkg usage to stable (#10876)

* change maps pkg from exp to stable where applicable

* replace exp_rand with crypto_rand

core/internal/features/ocr2/features_ocr2_test.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"maps"
 	"math/big"
 	"net/http"
 	"net/http/httptest"
@@ -26,7 +27,6 @@ import (
 	"github.com/smartcontractkit/libocr/gethwrappers2/ocr2aggregator"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"golang.org/x/exp/maps"
 
 	testoffchainaggregator2 "github.com/smartcontractkit/libocr/gethwrappers2/testocr2aggregator"
 	confighelper2 "github.com/smartcontractkit/libocr/offchainreporting2plus/confighelper"

core/services/blockhashstore/test_util.go

@@ -2,11 +2,11 @@ package blockhashstore
 
 import (
 	"context"
+	"crypto/rand"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/pkg/errors"
-	"golang.org/x/exp/rand"
 )
 
 type TestCoordinator struct {

core/services/chainlink/config_general_test.go

@@ -5,13 +5,12 @@ package chainlink
 import (
 	_ "embed"
 	"fmt"
+	"maps"
 	"net/url"
 	"strings"
 	"testing"
 	"time"
 
-	maps "golang.org/x/exp/maps"
-
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 

core/services/ocr2/plugins/s4/integration_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"crypto/ecdsa"
 	"fmt"
+	"maps"
 	"math/rand"
 	"testing"
 	"time"
@@ -26,7 +27,6 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/multierr"
-	"golang.org/x/exp/maps"
 )
 
 // Disclaimer: this is not a true integration test, it's more of a S4 feature test, on purpose.