Bump cryptography in /src/docs in the pip group across 1 directory

Bumps the pip group with 1 update in the /src/docs directory: [cryptography](https://github.com/pyca/cryptography).


Updates `cryptography` from 2.8 to 43.0.1
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@2.8...43.0.1)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-type: direct:production
  dependency-group: pip
...

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

src/docs/requirements.txt

@@ -15,7 +15,7 @@ command-not-found==0.3
 configobj==5.0.6
 constantly==15.1.0
 crit==3.19
-cryptography==2.8
+cryptography==43.0.1
 dbus-python==1.2.16
 distro==1.4.0
 distro-info==0.23+ubuntu1.1