Bump rdflib from 7.5.0 to 7.6.0

Bumps [rdflib](https://github.com/RDFLib/rdflib) from 7.5.0 to 7.6.0.
- [Release notes](https://github.com/RDFLib/rdflib/releases)
- [Changelog](https://github.com/RDFLib/rdflib/blob/main/CHANGELOG.md)
- [Commits](RDFLib/rdflib@7.5.0...7.6.0)

---
updated-dependencies:
- dependency-name: rdflib
  dependency-version: 7.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -43,7 +43,7 @@ pyparsing==3.3.2
 pyRdfa3==3.6.5
 pytz==2025.2
 PyYAML==6.0.3
-rdflib==7.5.0
+rdflib==7.6.0
 requests==2.32.5
 six==1.17.0
 smmap==5.0.2