fix(config-migration): prevent diff check (#31443)

lib/workers/repository/config-migration/branch/create.spec.ts

@@ -51,6 +51,7 @@ describe('workers/repository/config-migration/branch/create', () => {
         ],
         message: 'Migrate config renovate.json',
         platformCommit: 'auto',
+        force: true,
       });
     });
 
@@ -74,6 +75,7 @@ describe('workers/repository/config-migration/branch/create', () => {
         ],
         message,
         platformCommit: 'auto',
+        force: true,
       });
     });
 
@@ -98,6 +100,7 @@ describe('workers/repository/config-migration/branch/create', () => {
           ],
           message,
           platformCommit: 'auto',
+          force: true,
         });
       });
     });
@@ -123,6 +126,7 @@ describe('workers/repository/config-migration/branch/create', () => {
           ],
           message,
           platformCommit: 'auto',
+          force: true,
         });
       });
     });
@@ -149,6 +153,7 @@ describe('workers/repository/config-migration/branch/create', () => {
           ],
           message,
           platformCommit: 'auto',
+          force: true,
         });
       });
 
@@ -174,6 +179,7 @@ describe('workers/repository/config-migration/branch/create', () => {
           ],
           message,
           platformCommit: 'auto',
+          force: true,
         });
       });
     });

lib/workers/repository/config-migration/branch/create.ts

@@ -43,5 +43,6 @@ export async function createConfigMigrationBranch(
     ],
     message: commitMessage.toString(),
     platformCommit: config.platformCommit,
+    force: true,
   });
 }