fix(ctb): Bump XDM semver

.changeset/new-mails-explain.md

@@ -0,0 +1,5 @@
+---
+'@eth-optimism/contracts-bedrock': minor
+---
+
+Bump XDM semver after #5444

packages/contracts-bedrock/contracts/L1/L1CrossDomainMessenger.sol

@@ -20,12 +20,12 @@ contract L1CrossDomainMessenger is CrossDomainMessenger, Semver {
     OptimismPortal public immutable PORTAL;
 
     /**
-     * @custom:semver 1.1.0
+     * @custom:semver 1.2.0
      *
      * @param _portal Address of the OptimismPortal contract on this network.
      */
     constructor(OptimismPortal _portal)
-        Semver(1, 1, 0)
+        Semver(1, 2, 0)
         CrossDomainMessenger(Predeploys.L2_CROSS_DOMAIN_MESSENGER)
     {
         PORTAL = _portal;

packages/contracts-bedrock/contracts/L2/L2CrossDomainMessenger.sol

@@ -17,12 +17,12 @@ import { L2ToL1MessagePasser } from "./L2ToL1MessagePasser.sol";
  */
 contract L2CrossDomainMessenger is CrossDomainMessenger, Semver {
     /**
-     * @custom:semver 1.1.0
+     * @custom:semver 1.2.0
      *
      * @param _l1CrossDomainMessenger Address of the L1CrossDomainMessenger contract.
      */
     constructor(address _l1CrossDomainMessenger)
-        Semver(1, 1, 0)
+        Semver(1, 2, 0)
         CrossDomainMessenger(_l1CrossDomainMessenger)
     {
         initialize();

packages/contracts-bedrock/tasks/check-l2.ts

@@ -245,7 +245,7 @@ const check = {
     await assertSemver(
       L2CrossDomainMessenger,
       'L2CrossDomainMessenger',
-      '1.1.0'
+      '1.2.0'
     )
 
     const xDomainMessageSenderSlot = await signer.provider.getStorageAt(