Bump pymupdf from 1.25.1 to 1.26.0 (#2546)

Bumps [pymupdf](https://github.com/pymupdf/pymupdf) from 1.25.1 to 1.26.0.
- [Release notes](https://github.com/pymupdf/pymupdf/releases)
- [Changelog](https://github.com/pymupdf/PyMuPDF/blob/main/changes.txt)
- [Commits](pymupdf/PyMuPDF@1.25.1...1.26.0)

---
updated-dependencies:
- dependency-name: pymupdf
  dependency-version: 1.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

app/backend/requirements.txt

@@ -342,7 +342,7 @@ pyjwt==2.10.1
     # via
     #   -r requirements.in
     #   msal
-pymupdf==1.25.1
+pymupdf==1.26.0
     # via -r requirements.in
 pypdf==4.3.1
     # via -r requirements.in