Fix Claude code review workflow authentication

Add github_token to claude-code-action to fix authentication error. The workflow was failing with "User does not have write access on this repository" because it was trying to use OIDC token exchange without proper GitHub App permissions. Using the standard GITHUB_TOKEN secret resolves this.

Co-authored-by: bedaHovorka <5263405+bedaHovorka@users.noreply.github.com>

Author: Copilot

.github/workflows/claude-code-review.yml

@@ -36,6 +36,7 @@ jobs:
         uses: anthropics/claude-code-action@v1
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          github_token: ${{ secrets.GITHUB_TOKEN }}
           prompt: |
             REPO: ${{ github.repository }}
             PR NUMBER: ${{ github.event.pull_request.number }}