ci/groupcheck: fix TPU parameters (Lightning-AI#18617)

Author: Borda

.github/checkgroup.yml

@@ -95,8 +95,8 @@ subprojects:
       - ".github/workflows/tpu-tests.yml"
       - "tests/tests_pytorch/run_tpu_tests.sh"
     checks:
-      - "test-on-tpus (pytorch, xrt)"
-      - "test-on-tpus (pytorch, pjrt)"
+      - "test-on-tpus (pytorch, xrt, v4-8)"
+      - "test-on-tpus (pytorch, pjrt, v4-8)"
 
   - id: "fabric: Docs"
     paths: