Merge #1208 (update rstcheck to 6.1.0)

Author: martey

.github/workflows/validate-documentation.yml

@@ -27,4 +27,4 @@ jobs:
         with:
           virtualenv-location: "~/venv/current"
       - name: Run rstcheck
-        run: ~/venv/current/bin/rstcheck --report warning docs/source/*.rst
+        run: ~/venv/current/bin/rstcheck --report-level warning docs/source/*.rst

requirements/development.txt

@@ -5,5 +5,5 @@ coverage==6.4.4
 factory_boy==3.2.1
 flake8==5.0.4
 ipython==8.5.0
-rstcheck==5.0.0
+rstcheck==6.1.0
 sphinx==5.2.2