Update click requirement from <8 to <9

Updates the requirements on [click](https://github.com/pallets/click) to permit the latest version.
- [Release notes](https://github.com/pallets/click/releases)
- [Changelog](https://github.com/pallets/click/blob/main/CHANGES.rst)
- [Commits](pallets/click@0.1...8.1.7)

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

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

requirements.txt

@@ -1,6 +1,6 @@
 asks
 cachetools
-click<8
+click<9
 flit
 jedi
 matplotlib