chore: upgrade claude-code actions from @beta to @v1

- Update action references from @beta to @v1
- Move allowed_tools to --allowedTools in claude_args
- Move mcp_config to --mcp-config in claude_args
- Move claude_env to step-level env block
- Replace timeout_minutes with GitHub native timeout-minutes

Claude-Generated-By: Claude Code (cli/claude-opus-4-5=100%)
Claude-Steers: 8
Claude-Permission-Prompts: 3
Claude-Escapes: 0

.github/workflows/oncall-triage.yml

@@ -109,12 +109,13 @@ jobs:
           EOF
 
       - name: Run Claude Code for Oncall Triage
+        timeout-minutes: 10
         uses: anthropics/claude-code-base-action@v1
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           prompt_file: /tmp/claude-prompts/oncall-triage-prompt.txt
-          allowed_tools: "mcp__github__list_issues,mcp__github__get_issue,mcp__github__get_issue_comments,mcp__github__update_issue"
-          timeout_minutes: "10"
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
-          mcp_config: /tmp/mcp-config/mcp-servers.json
-          claude_env: |
-            GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          claude_args: |
+            --mcp-config /tmp/mcp-config/mcp-servers.json
+            --allowedTools "mcp__github__list_issues,mcp__github__get_issue,mcp__github__get_issue_comments,mcp__github__update_issue"