chore(deps): bump pypdf from 6.6.0 to 6.6.2 in /src/backend (#11207)

* chore(deps): bump pypdf from 6.6.0 to 6.6.2 in /src/backend

Bumps [pypdf](https://github.com/py-pdf/pypdf) from 6.6.0 to 6.6.2.
- [Release notes](https://github.com/py-pdf/pypdf/releases)
- [Changelog](https://github.com/py-pdf/pypdf/blob/main/CHANGELOG.md)
- [Commits](https://github.com/py-pdf/pypdf/compare/6.6.0...6.6.2)

---
updated-dependencies:
- dependency-name: pypdf
  dependency-version: 6.6.2
  dependency-type: direct:production
...

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

* fix style

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Matthias Mair <code@mjmair.com>

src/backend/requirements-dev.txt

@@ -631,9 +631,9 @@ rich==14.2.0 \
     --hash=sha256:73ff50c7c0c1c77c8243079283f4edb376f0f6442433aecb8ce7e6d0b92d1fe4 \
     --hash=sha256:76bc51fe2e57d2b1be1f96c524b890b816e334ab4c1e45888799bfaab0021edd
     # via pytest-codspeed
-setuptools==80.9.0 \
-    --hash=sha256:062d34222ad13e0cc312a4c02d73f059e86a4acbfbdea8f8f76b28c99f306922 \
-    --hash=sha256:f36b47402ecde768dbfafc46e8e4207b4360c654f1f3bb84475f0a28628fb19c
+setuptools==80.10.2 \
+    --hash=sha256:8b0e9d10c784bf7d262c4e5ec5d4ec94127ce206e8738f29a437945fbc219b70 \
+    --hash=sha256:95b30ddfb717250edb492926c92b5221f7ef3fbcc2b07579bcd4a27da21d0173
     # via
     #   -c src/backend/requirements.txt
     #   -r src/backend/requirements-dev.in