fix(ci): repair partition benchmark dependencies (#4733)
The partition benchmark fails during dependency installation because
`ubuntu-latest` selects Ubuntu 26.04, which the `alex-p/tesseract-ocr5`
PPA does not support. Pin both jobs to Ubuntu 24.04 and install
Tesseract and Korean language data from Ubuntu's repositories.
### Validation
- `actionlint` passed for the workflow.
- In a clean Ubuntu 24.04 ARM64 container, `tesseract-ocr` and
`tesseract-ocr-kor` installed successfully; Tesseract 5.3.4 listed
`kor`. The full workflow still needs validation on the GitHub runner.
(authored by codex)
<!-- This is an auto-generated description by cubic. -->
<a
href="https://cubic.dev/pr/Unstructured-IO/unstructured/pull/4733?utm_source=github"
target="_blank" rel="noopener noreferrer"
data-no-image-dialog="true"><picture><source
media="(prefers-color-scheme: dark)"
srcset="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"><source
media="(prefers-color-scheme: light)"
srcset="https://www.cubic.dev/buttons/review-in-cubic-light.svg"><img
alt="View guided diff"
src="https://www.cubic.dev/buttons/review-in-cubic-light.svg"></picture></a>
<!-- End of auto-generated description by cubic. -->
