chore(deps): bump anthropic from 0.83.0 to 0.84.0

Bumps [anthropic](https://github.com/anthropics/anthropic-sdk-python) from 0.83.0 to 0.84.0.
- [Release notes](https://github.com/anthropics/anthropic-sdk-python/releases)
- [Changelog](https://github.com/anthropics/anthropic-sdk-python/blob/main/CHANGELOG.md)
- [Commits](anthropics/anthropic-sdk-python@v0.83.0...v0.84.0)

---
updated-dependencies:
- dependency-name: anthropic
  dependency-version: 0.84.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -12,7 +12,7 @@ requires-python = ">=3.14,<3.15"
 dependencies = [
     "accessible-output3 @ git+https://github.com/SigmaNight/accessible_output3.git",
     "alembic>=1.18,<1.19",
-    "anthropic>=0.72.0,<0.84",
+    "anthropic>=0.72.0,<0.85",
     "babel>=2.17,<2.19",
     "fsspec>=2025.9.0,<2026.3",
     "google-genai>=1.47.0,<1.65",