upgrademanager: skip TestMigrationFailure

Skip TestMigrationFailure until the source of flakes can be fixed.

Release note: None
Part of: cockroachdb#106648

Author: jeffswenson

pkg/upgrade/upgrademanager/BUILD.bazel

@@ -67,6 +67,7 @@ go_test(
         "//pkg/sql/sem/eval",
         "//pkg/testutils",
         "//pkg/testutils/serverutils",
+        "//pkg/testutils/skip",
         "//pkg/testutils/sqlutils",
         "//pkg/testutils/testcluster",
         "//pkg/upgrade",

pkg/upgrade/upgrademanager/manager_external_test.go

@@ -38,6 +38,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/sql/sem/eval"
 	"github.com/cockroachdb/cockroach/pkg/testutils"
 	"github.com/cockroachdb/cockroach/pkg/testutils/serverutils"
+	"github.com/cockroachdb/cockroach/pkg/testutils/skip"
 	"github.com/cockroachdb/cockroach/pkg/testutils/sqlutils"
 	"github.com/cockroachdb/cockroach/pkg/testutils/testcluster"
 	"github.com/cockroachdb/cockroach/pkg/upgrade"
@@ -672,6 +673,8 @@ func TestMigrationFailure(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	skip.WithIssue(t, 106648)
+
 	ctx := context.Background()
 
 	// Configure the range of versions used by the test