Update rdflib requirement from <7.1,>=4.2.2 to >=4.2.2,<7.2

Updates the requirements on [rdflib](https://github.com/RDFLib/rdflib) to permit the latest version.
- [Release notes](https://github.com/RDFLib/rdflib/releases)
- [Changelog](https://github.com/RDFLib/rdflib/blob/main/CHANGELOG.md)
- [Commits](RDFLib/rdflib@4.2.2...7.1.0)

---
updated-dependencies:
- dependency-name: rdflib
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,6 +1,6 @@
 requests>=2.6.1
 ruamel.yaml>=0.16.0,<0.19
-rdflib>=4.2.2,<7.1
+rdflib>=4.2.2,<7.2
 schema-salad>=8.7,<9
 prov==1.5.1
 mypy-extensions

setup.py

@@ -124,7 +124,7 @@
         "requests >= 2.6.1",  # >= 2.6.1 to workaround
         # https://github.com/ionrock/cachecontrol/issues/137
         "ruamel.yaml >= 0.16, < 0.19",
-        "rdflib >= 4.2.2, < 7.1.0",
+        "rdflib >= 4.2.2, < 7.2.0",
         "schema-salad >= 8.7, < 9",
         "prov == 1.5.1",
         "mypy-extensions",