build(deps): bump typing-extensions from 4.5.0 to 4.8.0

Bumps [typing-extensions](https://github.com/python/typing_extensions) from 4.5.0 to 4.8.0.
- [Release notes](https://github.com/python/typing_extensions/releases)
- [Changelog](https://github.com/python/typing_extensions/blob/main/CHANGELOG.md)
- [Commits](python/typing_extensions@4.5.0...4.8.0)

---
updated-dependencies:
- dependency-name: typing-extensions
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -93,7 +93,7 @@ tlslite-ng==0.7.6
 tweepy==4.14.0
 # v4.6.0 breaks bases (which multiformats etc use)
 # https://github.com/hashberg-io/bases/issues/3
-typing-extensions==4.5.0
+typing-extensions==4.8.0
 typing-validation==1.0.0.post2
 ujson==5.8.0
 update-checker==0.18.0