Bump pypdf from 6.1.3 to 6.4.0 in /app/requirements (#1547)

Bumps [pypdf](https://github.com/py-pdf/pypdf) from 6.1.3 to 6.4.0.
- [Release notes](https://github.com/py-pdf/pypdf/releases)
- [Changelog](https://github.com/py-pdf/pypdf/blob/main/CHANGELOG.md)
- [Commits](py-pdf/pypdf@6.1.3...6.4.0)

---
updated-dependencies:
- dependency-name: pypdf
  dependency-version: 6.4.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

app/requirements/requirements.txt

@@ -7,7 +7,7 @@
 amqp==5.3.1
     # via kombu
 amsterdam-django-oidc==0.2.2
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 arpeggio==2.0.3
     # via textx
 asgiref==3.10.0
@@ -27,12 +27,12 @@ azure-core==1.36.0
 azure-identity==1.25.1
     # via azure-monitor-opentelemetry-exporter
 azure-monitor-opentelemetry-exporter==1.0.0b44
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 azure-storage-blob==12.27.1
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 beautifulsoup4==4.14.2
     # via
-    #   -r requirements/requirements.in
+    #   -r requirements.in
     #   o365
 billiard==4.2.2
     # via celery
@@ -50,7 +50,7 @@ cairosvg==2.8.2
     # via weasyprint
 celery==5.5.3
     # via
-    #   -r requirements/requirements.in
+    #   -r requirements.in
     #   django-celery-beat
     #   django-celery-email
     #   django-celery-results
@@ -102,7 +102,7 @@ diff-match-patch==20241021
     # via django-import-export
 django==4.2.26
     # via
-    #   -r requirements/requirements.in
+    #   -r requirements.in
     #   django-appconf
     #   django-celery-beat
     #   django-celery-email
@@ -124,36 +124,36 @@ django==4.2.26
 django-appconf==1.1.0
     # via django-celery-email
 django-celery-beat==2.8.1
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 django-celery-email==3.0.0
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 django-celery-results==2.6.0
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 django-cors-headers==4.9.0
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 django-extensions==4.1
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 django-filter==25.1
     # via
-    #   -r requirements/requirements.in
+    #   -r requirements.in
     #   djangorestframework-gis
 django-fsm==3.0.1
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 django-import-export==4.3.13
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 django-markdownx==4.0.9
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 django-o365mail==1.1.0
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 django-silk==5.4.3
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 django-storages[s3]==1.14.6
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 django-timezone-field==7.1
     # via django-celery-beat
 djangorestframework==3.15.2
     # via
-    #   -r requirements/requirements.in
+    #   -r requirements.in
     #   djangorestframework-csv
     #   djangorestframework-gis
     #   drf-amsterdam
@@ -162,27 +162,27 @@ djangorestframework==3.15.2
 djangorestframework-csv==3.0.2
     # via drf-amsterdam
 djangorestframework-gis==1.2.0
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 djangorestframework-xml==2.0.0
     # via drf-amsterdam
 drf-amsterdam==1.1.0
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 drf-extensions==0.8.0
     # via
-    #   -r requirements/requirements.in
+    #   -r requirements.in
     #   drf-amsterdam
 drf-spectacular[sidecar]==0.29.0
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 drf-spectacular-sidecar==2025.10.1
     # via drf-spectacular
 elasticsearch==7.17.12
     # via elasticsearch-dsl
 elasticsearch-dsl==7.4.1
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 fixedint==0.1.6
     # via azure-monitor-opentelemetry-exporter
 flower==2.0.1
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 gprof2dot==2025.4.14
     # via django-silk
 html5lib==1.1
@@ -207,16 +207,16 @@ josepy==2.2.0
     # via mozilla-django-oidc
 jsonschema==4.25.1
     # via
-    #   -r requirements/requirements.in
+    #   -r requirements.in
     #   drf-spectacular
 jsonschema-specifications==2025.9.1
     # via jsonschema
 jwcrypto==1.5.6
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 kombu==5.5.4
     # via celery
 lxml==6.0.2
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 markdown==3.10
     # via django-markdownx
 mozilla-django-oidc==4.0.1
@@ -231,7 +231,7 @@ msal-extensions==1.3.1
 msrest==0.7.1
     # via azure-monitor-opentelemetry-exporter
 networkx==3.5
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 o365==2.1.7
     # via django-o365mail
 oauthlib==3.3.1
@@ -255,14 +255,14 @@ opentelemetry-instrumentation==0.59b0
 opentelemetry-instrumentation-dbapi==0.59b0
     # via opentelemetry-instrumentation-psycopg2
 opentelemetry-instrumentation-django==0.59b0
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 opentelemetry-instrumentation-psycopg2==0.59b0
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 opentelemetry-instrumentation-wsgi==0.59b0
     # via opentelemetry-instrumentation-django
 opentelemetry-sdk==1.38.0
     # via
-    #   -r requirements/requirements.in
+    #   -r requirements.in
     #   azure-monitor-opentelemetry-exporter
 opentelemetry-semantic-conventions==0.59b0
     # via
@@ -282,7 +282,7 @@ packaging==25.0
     #   opentelemetry-instrumentation
 pillow==12.0.0
     # via
-    #   -r requirements/requirements.in
+    #   -r requirements.in
     #   cairosvg
     #   django-markdownx
     #   weasyprint
@@ -293,28 +293,28 @@ prompt-toolkit==3.0.52
 psutil==7.1.3
     # via azure-monitor-opentelemetry-exporter
 psycopg2-binary==2.9.11
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 pycparser==2.23
     # via cffi
 pyjwt[crypto]==2.10.1
     # via
     #   msal
     #   pyjwt
-pypdf==6.1.3
-    # via -r requirements/requirements.in
+pypdf==6.4.0
+    # via -r requirements.in
 pyphen==0.17.2
     # via weasyprint
 python-crontab==3.3.0
     # via django-celery-beat
 python-dateutil==2.9.0.post0
     # via
-    #   -r requirements/requirements.in
+    #   -r requirements.in
     #   botocore
     #   celery
     #   elasticsearch-dsl
     #   o365
 python-magic==0.4.27
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 pytz==2025.2
     # via flower
 pyyaml==6.0.3
@@ -325,7 +325,7 @@ referencing==0.37.0
     #   jsonschema-specifications
 requests==2.32.5
     # via
-    #   -r requirements/requirements.in
+    #   -r requirements.in
     #   azure-core
     #   mozilla-django-oidc
     #   msal
@@ -354,7 +354,7 @@ sqlparse==0.5.3
 tablib==3.9.0
     # via django-import-export
 textx==4.2.3
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 tinycss2==1.4.0
     # via
     #   cairosvg
@@ -388,7 +388,7 @@ urllib3==1.26.20
     #   elasticsearch
     #   requests
 uwsgi==2.0.31
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 vine==5.1.0
     # via
     #   amqp
@@ -397,7 +397,7 @@ vine==5.1.0
 wcwidth==0.2.14
     # via prompt-toolkit
 weasyprint==52.5
-    # via -r requirements/requirements.in
+    # via -r requirements.in
 webencodings==0.5.1
     # via
     #   cssselect2