Update release issue template

.gitlab/issue_templates/release.md

 # Release checklist:
 
-- [ ] update/review documentation and make sure it matches the current state
-  - Update how to checkout the latest stable tag
-- [ ] update [CHANGELOG.md](https://keepachangelog.com/en/1.0.0/)
-  - Include `Known issues`
-- [ ] update the version number in the `VERSION` file
-- [ ] commit
-- [ ] create signed tag (`git tag -s 0.2.0 -m 'Release 0.2.0'`)
-- [ ] Push to MR, including tag
+* [ ] update/review `docs/*` and make sure it matches the current state
+  * Update how to checkout the latest stable tag
+* [ ] Ensure all dependencies are updated and locked
+  * [ ] `requirements-stable.lock`
+  * [ ] `flux/*`
+* [ ] update [CHANGELOG.md](https://keepachangelog.com/en/1.0.0/)
+  * Include `Known issues`
+* [ ] update the version number in the `VERSION` file
+* [ ] commit (signed)
+* [ ] create signed tag (`git tag -s 0.2.0 -m 'Release 0.2.0'`)
+* [ ] Push to MR, including tag