chore: bump version to 2.7.0 (#20693)

## Summary

- Moves current version to previous versions array
- Sets TWENTY_CURRENT_VERSION to the new version
- Updates TWENTY_NEXT_VERSIONS with the next minor version

## Checklist

- [ ] Verify version constants are correct

Co-authored-by: Github Action Deploy <github-action-deploy@twenty.com>

packages/twenty-server/src/engine/core-modules/upgrade/constants/twenty-current-version.constant.ts

@@ -7,4 +7,4 @@
  *                              |___/
  */
 
-export const TWENTY_CURRENT_VERSION = '2.6.0' as const;
+export const TWENTY_CURRENT_VERSION = '2.7.0' as const;

packages/twenty-server/src/engine/core-modules/upgrade/constants/twenty-next-versions.constant.ts

@@ -8,5 +8,5 @@
  */
 
 export const TWENTY_NEXT_VERSIONS = [
-  '2.7.0',
+  '2.8.0',
 ] as const;

packages/twenty-server/src/engine/core-modules/upgrade/constants/twenty-previous-versions.constant.ts

@@ -17,4 +17,5 @@ export const TWENTY_PREVIOUS_VERSIONS = [
   '2.3.0',
   '2.4.0',
   '2.5.0',
+  '2.6.0',
 ] as const;