Add release notes for JHipster 8.9.0 (#1454)

docs/releases/2025-02-08-jhipster-release-8.9.0.mdx

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+---
+title: Release 8.9.0
+slug: /2024/12/23/jhipster-release-8.9.0.html
+displayed_sidebar: docsSidebar
+sidebar_class_name: hidden
+---
+
+# JHipster release v8.9.0
+
+This is a minor release for JHipster v8.
+
+It includes [361 closed issues and pull requests on the main branch](https://github.com/jhipster/generator-jhipster/issues?q=is:closed+milestone:8.9.0) after the [8.8.0 release](/2024/12/23/jhipster-release-8.8.0.html).
+
+## What's new?
+
+* Upgrade to Spring Boot 3.4.2 ([#28539](https://github.com/jhipster/generator-jhipster/pull/28539))
+* Be verbose about Docker Compose requirement ([#28376](https://github.com/jhipster/generator-jhipster/pull/28376))
+* Upgrade to Node 22.13.1 ([#28527](https://github.com/jhipster/generator-jhipster/pull/28527))
+* Upgrade to Gradle 8.12.1 ([#28543](https://github.com/jhipster/generator-jhipster/pull/28543))
+* Add support for plain Time fields ([#28474](https://github.com/jhipster/generator-jhipster/pull/28474))
+* Upgrade to Angular 19.0.6 ([#28442](https://github.com/jhipster/generator-jhipster/pull/28442))
+* [Angular] Fix OAuth2/Keycloak forces HTTPS redirects in development mode ([#28366](https://github.com/jhipster/generator-jhipster/pull/28366))
+* [Angular] Upgrade to Typescript 5.7.3 ([#28502](https://github.com/jhipster/generator-jhipster/pull/28502))
+* [Angular] angular-builders beta to stable version ([#28386](https://github.com/jhipster/generator-jhipster/pull/28386))
+* [Vue] Fix upgrade to Vite 6 ([#28304](https://github.com/jhipster/generator-jhipster/pull/28304))
+* Many clean code improvements
+
+## Closed tickets and merged pull requests
+
+See the [8.9.0 release notes on GitHub](https://github.com/jhipster/generator-jhipster/releases/tag/v8.9.0) for more details.
+
+As always, **[you can view all closed tickets and merged pull requests](https://github.com/jhipster/generator-jhipster/issues?q=is:closed+milestone:8.9.0)**.
+
+## How to install
+
+To install JHipster v8.9.0:
+
+```
+npm install -g [email protected]
+```
+
+It is also available using the JHipster Docker image, as it is automatically built from our source code.
+
+- [JHipster Online](https://start.jhipster.tech)
+- [JHipster Devbox](https://github.com/jhipster/jhipster-devbox)
+
+## How to upgrade
+
+**Automatic upgrade**
+
+For an automatic upgrade, use the [JHipster upgrade sub-generator](/upgrading-an-application/) on an existing application:
+
+Upgrade your version of JHipster:
+
+```
+npm update -g generator-jhipster
+```
+
+And then run the upgrade sub-generator:
+
+```
+jhipster upgrade
+```
+
+You can also use the [migrate blueprint](https://github.com/jhipster/generator-jhipster-migrate) for more advanced upgrade features.
+
+```
+npm i -g generator-jhipster-migrate
+jhipster-migrate
+```
+
+**Manual upgrades**
+
+For a manual upgrade, first upgrade your version of JHipster with:
+
+```
+npm update -g generator-jhipster
+```
+
+If you have an existing project, it will still use the JHipster version with which it was generated.
+To upgrade your project, you must first delete its `node_modules` folder and then run:
+
+```
+jhipster
+```
+
+Since JHipster 8.0, this command will update your project and all its entities.
+
+You can also update your entities one-by-one by running again the entity sub-generator, for example if your entity is named _Foo_, use:
+
+```
+jhipster entity Foo --single-entity
+```
+
+## Help and bugs
+
+If you find any issue with this release, don't hesitate to:
+
+- Add a bug to our [bug tracker](https://github.com/jhipster/generator-jhipster/issues?state=open)
+- Post a question on [Stack Overflow](http://stackoverflow.com/tags/jhipster/info)
+- Create a new discussion on [GitHub](https://github.com/jhipster/generator-jhipster/discussions)
+
+If the issue you have is an urgent bug or security issue, please:
+
+- Contact [@jhipster](https://twitter.com/jhipster) on Twitter