VAULT-14847 Skip cetain tests on ARM (#20990)

helper/testhelpers/mysql/mysqlhelper.go

@@ -8,6 +8,7 @@ import (
 	"database/sql"
 	"fmt"
 	"os"
+	"runtime"
 	"strings"
 	"testing"
 
@@ -26,6 +27,12 @@ func PrepareTestContainer(t *testing.T, legacy bool, pw string) (func(), string)
 		return func() {}, os.Getenv("MYSQL_URL")
 	}
 
+	// ARM64 is only supported on MySQL 8.0 and above. If we update
+	// our image and support to 8.0, we can unskip these tests.
+	if strings.Contains(runtime.GOARCH, "arm") {
+		t.Skip("Skipping, as MySQL 5.7 is not supported on ARM architectures")
+	}
+
 	imageVersion := "5.7"
 	if legacy {
 		imageVersion = "5.6"