Bump click from 8.0.1 to 8.0.3 in /blockdiag

Bumps [click](https://github.com/pallets/click) from 8.0.1 to 8.0.3.
- [Release notes](https://github.com/pallets/click/releases)
- [Changelog](https://github.com/pallets/click/blob/main/CHANGES.rst)
- [Commits](pallets/click@8.0.1...8.0.3)

---
updated-dependencies:
- dependency-name: click
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

blockdiag/requirements.txt

@@ -1,6 +1,6 @@
 actdiag==2.0.0
 blockdiag==2.0.1
-Click==8.0.1
+Click==8.0.3
 Flask==2.0.2
 funcparserlib==0.3.6
 gunicorn==20.1.0