chore🔧: move to go-admin-core v2

Every import of the module changes, not only the seven packages that
moved out of sdk/pkg: Go requires the major version in the path from v2
on. Both happen in one pass —

    go run github.com/go-admin-team/go-admin-core/tools/coreupgrade@v2.0.0 -w -v2 .
    go mod tidy

— which is the command the release notes give, run here as a consumer
would run it. 210 imports across 95 files.

The compatibility shims this used are gone in v2, so the paths that
moved had to move: sdk/pkg/captcha, sdk/pkg/jwtauth and its user
package, sdk/pkg/response and sdk/pkg/casbin.

The count of unformatted files is unchanged at 34, none of them touched
by this: the tool reformats a file only if it was already gofmt clean,
so a migration cannot disappear into whitespace.

app/other/models/tools/db_columns.go

@@ -3,8 +3,8 @@ package tools
 import (
 	"errors"
 
-	"github.com/go-admin-team/go-admin-core/sdk/config"
-	"github.com/go-admin-team/go-admin-core/sdk/pkg"
+	"github.com/go-admin-team/go-admin-core/v2/sdk/config"
+	"github.com/go-admin-team/go-admin-core/v2/sdk/pkg"
 	"gorm.io/gorm"
 )
 

app/other/models/tools/db_tables.go

@@ -2,11 +2,11 @@ package tools
 
 import (
 	"errors"
-	"github.com/go-admin-team/go-admin-core/sdk/pkg"
+	"github.com/go-admin-team/go-admin-core/v2/sdk/pkg"
 
 	"gorm.io/gorm"
 
-	config2 "github.com/go-admin-team/go-admin-core/sdk/config"
+	config2 "github.com/go-admin-team/go-admin-core/v2/sdk/config"
 )
 
 type DBTables struct {

app/other/models/tools/db_tables_test.go

@@ -4,7 +4,7 @@ import (
 	"testing"
 
 	"github.com/glebarez/sqlite"
-	config2 "github.com/go-admin-team/go-admin-core/sdk/config"
+	config2 "github.com/go-admin-team/go-admin-core/v2/sdk/config"
 	"gorm.io/gorm"
 )
 

app/other/models/tools/driver_guard_test.go

@@ -4,7 +4,7 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/go-admin-team/go-admin-core/sdk/config"
+	"github.com/go-admin-team/go-admin-core/v2/sdk/config"
 	"gorm.io/gorm"
 )