Release scvi-tools 1.1.2

[martinkim0]

• [x] Bump version in pyproject.toml #2538
• [x] If patch release, backport version bump PR into the appropriate branch. Else, create a new branch off main with the appropriate rules #2539
• [x] ~Trigger a Docker image build in scvi-tools-docker targeting the release branch~
• [x] ~After image builds and pushes to the registry, run the tutorials using the new image~
• [ ] Publish a new release on the tutorials repo off main after all tutorials changes have been merged
• [ ] Create a new branch off main in the main repo and run git submodule update --remote, and then merge the PR, with an appropriate backport as needed
• [ ] Create a new GitHub release targeting the release branch with the same body as the previous release
• [ ] Check that the version updates correctly on PyPI
• [ ] Build new Docker images with the stable and semantic versioning tags
• [ ] Check that the feedstock repo updates correctly
• [ ] (Optional) Post threads on Discourse and Twitter