Bump pyarrow from 11.0.0.dev216 to 11.0.0.dev294 in /server

Bumps [pyarrow](https://github.com/apache/arrow) from 11.0.0.dev216 to 11.0.0.dev294.
- [Release notes](https://github.com/apache/arrow/releases)
- [Commits](https://github.com/apache/arrow/commits)

---
updated-dependencies:
- dependency-name: pyarrow
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

server/requirements.txt

@@ -44,7 +44,7 @@ pluralizer==1.2.0
 --extra-index-url https://pypi.fury.io/arrow-nightlies
 --prefer-binary
 --pre
-pyarrow==11.0.0.dev216
+pyarrow==11.0.0.dev294
 email-validator==1.3.0
 ariadne==0.16.1
 aiomonitor==0.4.5