Bump cryptography from 43.0.1 to 43.0.3 in /components/letsencrypt

Bumps [cryptography](https://github.com/pyca/cryptography) from 43.0.1 to 43.0.3.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@43.0.1...43.0.3)

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

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

components/letsencrypt/requirements.txt

@@ -5,7 +5,7 @@ asn1crypto==1.5.1
 certifi==2024.8.30
 cffi==1.17.1
 charset-normalizer==3.4.0
-cryptography==43.0.1
+cryptography==43.0.3
 idna==3.10
 josepy==1.14.0
 mock==5.1.0