Add changeset for Backstage 1.43.2 compatibility updates

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>
Signed-off-by: Ian Bolton <[email protected]>

Author: ibolton336

workspaces/mta/.changeset/backstage-version-updates.md

@@ -0,0 +1,8 @@
+---
+'@backstage-community/backstage-plugin-catalog-backend-module-mta-entity-provider': patch
+'@backstage-community/backstage-plugin-scaffolder-backend-module-mta': patch
+'@backstage-community/backstage-plugin-mta-frontend': patch
+'@backstage-community/backstage-plugin-mta-backend': patch
+---
+
+Update Backstage dependencies to version 1.43.2 for compatibility