MM-41231: Bump morph dependency to avoid advisory locks (#19421)

https://mattermost.atlassian.net/browse/MM-41231

```release-note
NONE
```

vendor/github.com/go-morph/morph/drivers/lock.go

@@ -76,3 +76,10 @@ type Locker interface {
 type Lockable interface {
 	DriverName() string
 }
+
+// IsLockable returns whether the given instance satisfies
+// drivers.Lockable or not.
+func IsLockable(x interface{}) bool {
+	_, ok := x.(Lockable)
+	return ok
+}

vendor/github.com/go-morph/morph/drivers/mysql/mysql.go

@@ -132,6 +132,11 @@ func (driver *mysql) Close() error {
 }
 
 func (driver *mysql) Lock() error {
+	if drivers.IsLockable(driver) {
+		// Supports lockable, so already locked at the global level.
+		return nil
+	}
+
 	aid, err := drivers.GenerateAdvisoryLockID(driver.config.databaseName, driver.config.MigrationsTable)
 	if err != nil {
 		return err
@@ -167,6 +172,11 @@ func (driver *mysql) Lock() error {
 }
 
 func (driver *mysql) Unlock() error {
+	if drivers.IsLockable(driver) {
+		// Supports lockable, so already locked at the global level.
+		return nil
+	}
+
 	aid, err := drivers.GenerateAdvisoryLockID(driver.config.databaseName, driver.config.MigrationsTable)
 	if err != nil {
 		return err

vendor/github.com/go-morph/morph/drivers/postgres/postgres.go

@@ -220,6 +220,11 @@ func (pg *postgres) Close() error {
 }
 
 func (pg *postgres) Lock() error {
+	if drivers.IsLockable(pg) {
+		// Supports lockable, so already locked at the global level.
+		return nil
+	}
+
 	aid, err := drivers.GenerateAdvisoryLockID(pg.config.databaseName, pg.config.schemaName)
 	if err != nil {
 		return err
@@ -244,6 +249,11 @@ func (pg *postgres) Lock() error {
 }
 
 func (pg *postgres) Unlock() error {
+	if drivers.IsLockable(pg) {
+		// Supports lockable, so already locked at the global level.
+		return nil
+	}
+
 	aid, err := drivers.GenerateAdvisoryLockID(pg.config.databaseName, pg.config.schemaName)
 	if err != nil {
 		return err

vendor/github.com/go-morph/morph/morph.go

@@ -76,6 +76,7 @@ func WithLock(key string) EngineOption {
 }
 
 // New creates a new instance of the migrations engine from an existing db instance and a migrations source.
+// If the driver implements the Lockable interface, it will also wait until it has acquired a lock.
 func New(ctx context.Context, driver drivers.Driver, source sources.Source, options ...EngineOption) (*Morph, error) {
 	engine := &Morph{
 		config: &Config{