github: switch claude-code-action to hauke/claude-code-action v1.0.77-fixed

Use a patched fork while waiting for
https://github.com/anthropics/claude-code-action/pull/963 to be
merged and released upstream.

Version v1.0.77 contains many improvments over 1.0.49 which was used
before. It uses Sonnet 4.6 instead of Sonnet 4.5.

Fixes: c0e75c9de6 ("github: add Claude code review workflow triggered by /claude comment")
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

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

@@ -26,7 +26,7 @@ jobs:
           fetch-depth: 1
 
       - name: PR Review
-        uses: anthropics/claude-code-action@f669191d7d1e67f08a54b0c11cf5683a9a391951 # v1.0.49
+        uses: hauke/claude-code-action@95d07da986168a9998e8e4713ec29b7c162b4dd9 # v1.0.77-fixed
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           github_token: ${{ secrets.GITHUB_TOKEN }}