Bump pymupdf from 1.26.6 to 1.26.7 (#5157)

Bumps [pymupdf](https://github.com/pymupdf/pymupdf) from 1.26.6 to 1.26.7.
- [Release notes](https://github.com/pymupdf/pymupdf/releases)
- [Changelog](https://github.com/pymupdf/PyMuPDF/blob/main/changes.txt)
- [Commits](pymupdf/PyMuPDF@1.26.6...1.26.7)

---
updated-dependencies:
- dependency-name: pymupdf
  dependency-version: 1.26.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -299,7 +299,7 @@ pygal==3.0.5
     # via geotrek (setup.py)
 pymemcache==4.0.0
     # via geotrek (setup.py)
-pymupdf==1.26.6
+pymupdf==1.26.7
     # via pdfimpose
 pyopenair==1.2.1
     # via geotrek (setup.py)