nightly: spin-up a runner with long-running bazel daemon

Author: jbdalido

.github/workflows/nightly.yaml

@@ -20,14 +20,14 @@ jobs:
             config: "--config=cuda"
             artifact: libpjrt_c_api_gpu_plugin.so
             renamed_artifact: libpjrt_cuda.so
-            runs_on: ["runs-on", "runner=32cpu-linux-x64"]
+            runs_on: ["self-hosted","nightly"]
             platform: linux-amd64
             bazel_target: //xla/pjrt/c:pjrt_c_api_gpu_plugin
           - target: rocm
             config: "--config=rocm"
             artifact: libpjrt_c_api_gpu_plugin.so
             renamed_artifact: libpjrt_rocm.so
-            runs_on: ["runs-on", "runner=32cpu-linux-x64", "image=ubuntu24-amd64"]
+            runs_on: ["self-hosted","nightly"]
             platform: linux-amd64
             bazel_target: //xla/pjrt/c:pjrt_c_api_gpu_plugin
     runs-on: ubuntu-latest