chore(deps): bump fsspec from 2026.4.0 to 2026.6.0

Bumps [fsspec](https://github.com/fsspec/filesystem_spec) from 2026.4.0 to 2026.6.0.
- [Commits](fsspec/filesystem_spec@2026.4.0...2026.6.0)

---
updated-dependencies:
- dependency-name: fsspec
  dependency-version: 2026.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -14,7 +14,7 @@ dependencies = [
     "alembic>=1.18,<1.19",
     "anthropic>=0.105.2,<0.106",
     "babel>=2.17,<2.19",
-    "fsspec>=2026.4.0,<2026.5",
+    "fsspec>=2026.6.0,<2026.7",
     "google-genai>=2.7.0,<2.8",
     "httpx>=0.28.1,<0.29.0",
     "keyring>=25.7.0,<25.8",