ci: Updated default gemini model in CI jobs (#411)

Author: droot

.github/workflows/ci-periodic.yaml

@@ -43,7 +43,7 @@ jobs:
           cluster_name: periodic-eval-cluster
       - name: Run an easy eval
         run: |
-          TEST_ARGS="--llm-provider vertexai --models gemini-2.5-pro-preview-05-06 --task-pattern=scale-" ./dev/ci/periodics/run-evals.sh
+          TEST_ARGS="--llm-provider vertexai --models gemini-2.5-pro --task-pattern=scale-" ./dev/ci/periodics/run-evals.sh
       - name: Analyse results
         run: |
           ./dev/ci/periodics/analyze-evals.sh

.github/workflows/k8s-bench-evals.yaml

@@ -48,7 +48,7 @@ jobs:
         env:
           TEST_ARGS: >-
             --llm-provider ${{ github.event.inputs.llm_provider || 'vertexai' }} \
-            --models ${{ github.event.inputs.model || 'gemini-2.5-pro-preview-05-06' }} \
+            --models ${{ github.event.inputs.model || 'gemini-2.5-pro' }} \
             --enable-tool-use-shim=${{ github.event.inputs.enable_tool_use_shim || 'false' }} \
             --task-pattern=${{ github.event.inputs.task_pattern || 'scale-' }}
         run: |