Update README.md and CONTRIBUTING.md for Java 17+

Author: gsmet

CONTRIBUTING.md

@@ -227,7 +227,7 @@ If you have not done so on this machine, you need to:
     * macOS: Use the `Disk Utility.app` to check. It also allows you to create a case-sensitive volume to store your code projects. See this [blog entry](https://karnsonline.com/case-sensitive-apfs/) for more.
     * Windows: [Enable case sensitive file names per directory](https://learn.microsoft.com/en-us/windows/wsl/case-sensitivity)
 * Install Git and configure your GitHub access
-* Install Java SDK 11+ (OpenJDK recommended)
+* Install Java SDK 17+ (OpenJDK recommended)
 * Install [GraalVM](https://quarkus.io/guides/building-native-image)
 * Install platform C developer tools:
     * Linux
@@ -357,7 +357,7 @@ in `quarkus-parent` (root `pom.xml`).
 When contributing to Quarkus, it is recommended to respect the following rules.
 
 > **Note:** The `impsort-maven-plugin` uses the `.cache` directory on each module to speed up the build.
-> Because we have configured the plugin to store in a versioned directory, you may notice over time that the `.cache` directory grows in size. You can safely delete the `.cache` directory in each module to reclaim the space. 
+> Because we have configured the plugin to store in a versioned directory, you may notice over time that the `.cache` directory grows in size. You can safely delete the `.cache` directory in each module to reclaim the space.
 > Running `./mvnw clean -Dclean-cache` automatically deletes that directory for you.
 
 **Contributing to an extension**
@@ -748,7 +748,7 @@ This project is an open source project, please act responsibly, be nice, polite
 
   See section `IDEA Setup` as there are different possible solutions described.
 
-* IntelliJ does not recognize the project as a Java 11 project
+* IntelliJ does not recognize the project as a Java 17 project
 
   In the Maven pane, uncheck the `include-jdk-misc` and `compile-java8-release-flag` profiles
 
@@ -787,5 +787,5 @@ This project is an open source project, please act responsibly, be nice, polite
   ...
   ```
 * Tests fail with `Caused by: io.quarkus.runtime.QuarkusBindException: Port(s) already bound: 8080: Address already in use`
-    
+
     Check that you do not have other Quarkus dev environments, apps or other web servers running on this default 8080 port.

README.md

@@ -7,15 +7,15 @@
 [![License](https://img.shields.io/github/license/quarkusio/quarkus?style=for-the-badge&logo=apache)](https://www.apache.org/licenses/LICENSE-2.0)
 [![Project Chat](https://img.shields.io/badge/zulip-join_chat-brightgreen.svg?style=for-the-badge&logo=zulip)](https://quarkusio.zulipchat.com/)
 [![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?style=for-the-badge&logo=gitpod&logoColor=white)](https://gitpod.io/#https://github.com/quarkusio/quarkus/-/tree/main/)
-[![Supported JVM Versions](https://img.shields.io/badge/JVM-11--17--21-brightgreen.svg?style=for-the-badge&logo=openjdk)](https://github.com/quarkusio/quarkus/actions/runs/113853915/)
+[![Supported JVM Versions](https://img.shields.io/badge/JVM-17--21-brightgreen.svg?style=for-the-badge&logo=openjdk)](https://github.com/quarkusio/quarkus/actions/runs/113853915/)
 [![Develocity](https://img.shields.io/badge/Revved%20up%20by-Develocity-06A0CE?style=for-the-badge&logo=gradle)](https://ge.quarkus.io/scans)
 [![GitHub Repo stars](https://img.shields.io/github/stars/quarkusio/quarkus?style=for-the-badge)](https://github.com/quarkusio/quarkus/stargazers)
 
 # Quarkus - Supersonic Subatomic Java
 
 Quarkus is a Cloud Native, (Linux) Container First framework for writing Java applications.
 
-* **Container First**: 
+* **Container First**:
 Minimal footprint Java applications optimal for running in containers.
 * **Cloud Native**:
 Embraces [12 factor architecture](https://12factor.net) in environments like Kubernetes.