requirements: add pypdf

requirements.txt

@@ -11,6 +11,7 @@ click==8.0.3
 click-didyoumean==0.3.0
 click-plugins==1.1.1
 click-repl==0.2.0
+coverage==7.5.4
 cron-descriptor==1.2.35
 Deprecated==1.2.13
 Django==4.0.1
@@ -32,6 +33,7 @@ Pillow==9.0.0
 prompt-toolkit==3.0.24
 pymemcache==4.0.0
 pyparsing==3.0.6
+pypdf==5.0.1
 python-crontab==2.7.1
 python-dateutil==2.8.2
 python-monkey-business==1.0.0
@@ -42,6 +44,7 @@ rules==3.3
 six==1.16.0
 sqlparse==0.4.2
 tinycss2==1.1.1
+typing_extensions==4.12.2
 tzdata==2022.7
 urllib3==1.26.8
 vine==5.0.0