Ci update tpu (#10197)

* Update nightly_tests.yml for TPU CI

* Update push_tests.yml

.github/workflows/nightly_tests.yml

@@ -238,12 +238,13 @@ jobs:
 
   run_flax_tpu_tests:
     name: Nightly Flax TPU Tests
-    runs-on: docker-tpu
+    runs-on:
+      group: gcp-ct5lp-hightpu-8t
     if: github.event_name == 'schedule'
 
     container:
       image: diffusers/diffusers-flax-tpu
-      options: --shm-size "16gb" --ipc host -v /mnt/hf_cache:/mnt/cache/ --privileged
+      options: --shm-size "16gb" --ipc host --privileged ${{ vars.V5_LITEPOD_8_ENV}} -v /mnt/hf_cache:/mnt/hf_cache
     defaults:
       run:
         shell: bash

.github/workflows/push_tests.yml

@@ -161,11 +161,11 @@ jobs:
 
   flax_tpu_tests:
     name: Flax TPU Tests
-    runs-on: docker-tpu
+    runs-on:
+      group: gcp-ct5lp-hightpu-8t
     container:
       image: diffusers/diffusers-flax-tpu
-      options: --shm-size "16gb" --ipc host -v /mnt/cache/.cache/huggingface:/mnt/cache/ --privileged
-    defaults:
+      options: --shm-size "16gb" --ipc host --privileged ${{ vars.V5_LITEPOD_8_ENV}} -v /mnt/hf_cache:/mnt/hf_cache    defaults:
       run:
         shell: bash
     steps: