Workflow updates

- Do not re-run PR tests on edited PRs
- Close added/fixed issues on published release
- Issues stale after 60 days instead of 30, close after 10 days instead of 5
- Use Vankka/pr-target-branch-action for checking that PR is made to proper branch
- Add version number to sphinx config, must use cmake to configure the file
- Add jobs to readthedocs.yaml configuration

.github/workflows/CI.yml

@@ -3,7 +3,7 @@ name: CI
 on:
   pull_request:
     branches: [master, nightly]
-    types: [opened, synchronize, edited, reopened]
+    types: [opened, synchronize, reopened]
   push:
     branches: [master]
   workflow_dispatch: