[CI] Change A2 runner (#6557)

### What this PR does / why we need it?

This PR updates the CI runner from `linux-aarch64-a2-*` to
`linux-aarch64-a2b3-*` in various test configuration files. This change
is necessary to adapt to updates in the CI infrastructure.

### Does this PR introduce _any_ user-facing change?

No.

### How was this patch tested?

The changes are configuration updates for CI tests. The correctness will
be verified by the CI pipeline.

Signed-off-by: hfadzxy <starmoon_zhang@163.com>

.github/workflows/pr_test_light.yaml

@@ -43,7 +43,7 @@ jobs:
     with:
       vllm: d7e17aaacd5ed1b4b4be6bcfef3a1b7cbc84fc9a
   changes:
-    runs-on: linux-aarch64-a2-0
+    runs-on: linux-aarch64-a2b3-0
     outputs:
       e2e_tracker: ${{ steps.filter.outputs.e2e_tracker }}
       ut_tracker: ${{ steps.filter.outputs.ut_tracker }}
@@ -107,7 +107,7 @@ jobs:
     uses: ./.github/workflows/_e2e_test.yaml
     with:
       vllm: ${{ matrix.vllm_version }}
-      runner: linux-aarch64-a2
+      runner: linux-aarch64-a2b3
       image: swr.cn-southwest-2.myhuaweicloud.com/base_image/ascend-ci/cann:8.5.0-910b-ubuntu22.04-py3.11
       contains_310: ${{ needs.changes.outputs._310_tracker == 'true' }}
       type: light