chore: rename early-pre-release template (#646)

* chore: restore container images tracking issue.

It was removed in #605

- [ ] Decide what to do with [docker-images/pre-release.md](https://github.com/stackabletech/docker-images/blob/5324e044a8aaac10e68767ba2b3c39e2623724f1/.github/ISSUE_TEMPLATE/pre-release.md?plain=1)

See: #602 (comment)

* chore: refer to renamed template from stackabletech/docker-images#850

* chore: remove old template

.github/ISSUE_TEMPLATE/release.md

@@ -34,7 +34,7 @@ Replace the items in the task lists below with the applicable Pull Requests / Is
 - [ ] [Update and release operator-rs workspace members](https://github.com/stackabletech/operator-rs/issues/new?template=release-workspace-members.md)
 - [ ] [Update Rust toolchain of operators](https://github.com/stackabletech/operator-templating/issues/new?template=pre-release.md)
 - [ ] [Update Rust dependencies of operators](https://github.com/stackabletech/issues/issues/new?template=pre-release-operator-rust-deps.md)
-- [ ] [Update Container Images](https://github.com/stackabletech/docker-images/issues/new?template=pre-release.md)
+- [ ] [Update Container Images](https://github.com/stackabletech/docker-images/issues/new?template=early-pre-release.md)
 ```
 
 > [!TIP]