ci: pass the Claude subscription token to the Dependabot repair (#37)

claude-code-action refuses API key requests from GitHub Actions with a
"Credit balance is too low" error (anthropics/claude-code-action#1901).
The repair now authenticates with CLAUDE_CODE_OAUTH_TOKEN.

Signed-off-by: Bart Waardenburg <bart@waardenburg.dev>

Author: BartWaardenburg

.github/workflows/dependabot.yml

@@ -42,4 +42,5 @@ jobs:
       statuses: read
     secrets:
       ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
+      CLAUDE_CODE_OAUTH_TOKEN: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
       DEPENDABOT_APP_PRIVATE_KEY: ${{ secrets.DEPENDABOT_APP_PRIVATE_KEY }}