Make ASAN checks of release procedure

Author: rhpvorderman

.github/release_checklist.md

@@ -5,6 +5,7 @@ Release checklist
   - [ ] Set version to a stable number.
   - [ ] Change current development version in `CHANGELOG.rst` to stable version.
   - [ ] Change the version in `__init__.py`
+- [ ] Check if the address sanitizer does not find any problems using `tox -e asan`
 - [ ] Merge the release branch into `main`.
 - [ ] Created an annotated tag with the stable version number. Include changes 
 from CHANGELOG.rst.