Update nbconvert requirement in /sdks/python

Updates the requirements on [nbconvert](https://github.com/jupyter/nbconvert) to permit the latest version.
- [Release notes](https://github.com/jupyter/nbconvert/releases)
- [Commits](jupyter/nbconvert@6.2.0...7.0.0)

---
updated-dependencies:
- dependency-name: nbconvert
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

sdks/python/setup.py

@@ -332,7 +332,7 @@ def get_portability_package_data():
           'interactive_test': [
             # notebok utils
             'nbformat>=5.0.5,<6',
-            'nbconvert>=6.2.0,<7',
+            'nbconvert>=6.2.0,<8',
             # headless chrome based integration tests
             'needle>=0.5.0,<1',
             'chromedriver-binary>=100,<101',