Bump chardet from 4.0.0 to 5.0.0 in /demo/graph_tutorial

Bumps [chardet](https://github.com/chardet/chardet) from 4.0.0 to 5.0.0.
- [Release notes](https://github.com/chardet/chardet/releases)
- [Commits](chardet/chardet@4.0.0...5.0.0)

---
updated-dependencies:
- dependency-name: chardet
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

demo/graph_tutorial/requirements.txt

@@ -1,7 +1,7 @@
 asgiref==3.5.2
 certifi==2021.10.8
 cffi==1.15.1
-chardet==4.0.0
+chardet==5.0.0
 cryptography==36.0.2
 Django==3.2.15
 idna==3.3