fix(core): static-query migration errors not printed properly (#30458)

Apparently the devkit logger is not able to properly print
out error objects, so we need to convert them to a string
before in order to make the error visible to the user.

This is not testable without an e2e test that validates the CLI
terminal output.

PR Close #30458

packages/core/schematics/migrations/static-queries/index.ts

@@ -192,7 +192,7 @@ async function runStaticQueryMigration(
           `the update cannot use the template migration strategy. Please ensure ` +
           `there are no AOT compilation errors.`);
     }
-    logger.error(e);
+    logger.error(e.toString());
     logger.info(
         'Migration can be rerun with: "ng update @angular/core --from 7 --to 8 --migrate-only"');
     return [];